Relationship between individual characteristics, neighbourhood contexts and help-seeking intentions for mental illness.

OBJECTIVE: Encouraging help-seeking for mental illness is essential for prevention of suicide. This study examined the relationship between individual characteristics, neighbourhood contexts and help-seeking intentions for mental illness for the purpose of elucidating the role of neighbourhood in the help-seeking process. DESIGN, SETTING AND PARTICIPANTS: A cross-sectional web-based survey was conducted among Japanese adults aged 20-59 years in June 2014. Eligible respondents who did not have a serious health condition were included in this study (n=3308). MAIN OUTCOME MEASURES: Participants were asked how likely they would be to seek help from someone close to them (informal help) and medical professionals (formal help), respectively, if they were suffering from serious mental illness. Path analysis with structural equation modelling was performed to represent plausible connections between individual characteristics, neighbourhood contexts, and informal and formal help-seeking intentions.
RESULTS: The acceptable fitting model indicated that those who had a tendency to consult about everyday affairs were significantly more likely to express an informal help-seeking intention that was directly associated with a formal help-seeking intention. Those living in a communicative neighbourhood, where neighbours say hello whenever they pass each other, were significantly more likely to express informal and formal help-seeking intentions. Those living in a supportive neighbourhood, where neighbours work together to solve neighbourhood problems, were significantly more likely to express an informal help-seeking intention. Adequate health literacy was directly associated with informal and formal help-seeking intentions, along with having an indirect effect on the formal help-seeking intention through developed positive perception of professional help.
CONCLUSIONS: The results of this study bear out the hypothesis that neighbourhood context contributes to help-seeking intentions for mental illness. Living in a neighbourhood with a communicative atmosphere and having adequate health literacy were acknowledged as possible facilitating factors for informal and formal help-seeking for mental illness. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

Previous studies have revealed the individual factors that may inhibit or facilitate help-seeking for mental illness, but less is known about neighbourhood factors. This study represents the first attempt to elucidate multifactorial mechanisms for help-seeking using structural equation modelling.

Our final structural equation model illustrated the pathways linking individual and neighbourhood factors to informal and formal help-seeking intentions, and bore out the hypothesis that neighbourhood context contributes to help-seeking intentions for mental illness.

The study design is cross-sectional and self-reported, so we cannot reject the possibility of reverse causation or common method bias. The study participants seem not to be representative of the general population. Further studies are needed to confirm the findings and refine the model. Moreover, the relationship between help-seeking intentions and actual help-seeking should be investigated in future.

Introduction

The WHO published its first report on suicide prevention in 2014.1 According to the report, more than 800 000 people die by suicide every year. While the reasons that people commit suicide vary widely, almost all suicide victims have signs or symptoms of mental illness at the time of their death. Unfortunately, people do not always seek help when they suffer mental illness or have suicidal thoughts.2 3 Encouraging help-seeking for mental illness is essential for prevention of suicide.

A socioecological perspective acknowledges that health behaviour is influenced by the social environment.4 While the proximal cause of health behaviour lies within the individual rather than in the social environment, changes in the social environment will produce changes in individuals. Similarly to other health behaviours, help-seeking for mental illness is considered to be determined through the interaction between individuals and their environment.2 3 5 Traditionally, public health strategies for encouraging help-seeking have focused on modifying individual factors such as knowledge and skills. Once the factors in the social environment that can affect help-seeking are identified, the focus of strategy will broaden to include the environmental factors.

The social environment is a broad multidimensional concept that includes the groups to which we belong, the neighbourhoods in which we live and the policies we create to order our lives.6 Neighbourhood is the next smallest social unit after family, in which face-to-face interactions occur among members. Previous studies have revealed that neighbourhood context, or more specifically neighbourhood social capital, is associated with health behaviours such as smoking, drinking, diet and physical activity.7 The impact of neighbourhood context on health behaviour may be worth considering when developing public health strategies for encouraging help-seeking. Unfortunately, to the best of our knowledge, there have been no studies examining to what extent neighbourhood context contributes to help-seeking and what factors are responsible for the neighbourhood effect. Little is known about the role of the neighbourhood in the help-seeking process.

The aim of this study was to determine the relationship between individual characteristics, neighbourhood contexts and help-seeking intentions for mental illness. On the basis of a review of the literature, we created a hypothesis model linking individual and neighbourhood factors, to informal and formal help-seeking intentions, to represent plausible multifactorial mechanisms for help-seeking (figure 1). Compared to previous studies, this study examined a wider variety of factors that may affect help-seeking decision-making. Path analysis with structural equation modelling was performed to test the hypothesis model and to elucidate the role of neighbourhood in the help-seeking process. We believe the findings of this study will provide a new direction for public health strategies for encouraging help-seeking or suicide prevention policies.

Figure 1

Relationship between individual and neighbourhood factors and help-seeking intentions for mental illness (hypothesis model).

Methods

Participants

A cross-sectional web-based survey was conducted in June 2014 among Japanese adults aged 20–59 years who lived in four prefectures, Chiba, Niigata, Nagano and Fukuoka, in Japan. Medical professionals and students were excluded from recruitment because their attitudes to help-seeking are seen as different from those of the larger population.

An online research company (INTAGE, Inc, Tokyo, Japan) was contracted to create web questionnaire forms and to collect anonymous responses (n=3200). The company has a nationwide research panel of 1.2 million registrants. At the time of the survey, those registrants aged 20–59 years who lived in the four prefectures and were not medical professionals or students, totalled 46 258 (20 071 males and 26 187 females). Recruitment emails were sent to 8721 eligible registrants who were randomly selected from each age/gender/prefecture stratum. Applicants for participation in the survey were accepted in the order of receipt until the number of participants reached the quotas (100 people for each age/gender/prefecture stratum). All participants voluntarily agreed to complete the survey. A total of 3365 responses were obtained over 8 days of recruitment. Of these, 6 participants reported having serious health conditions and 51 participants provided incomplete or inconsistent answers to questions. The remaining 3308 participants were finally included in the study.

Table 1 shows the characteristics of the study participants. According to the 2010 national census,8 the percentage of the Japanese population aged 20–59 years with university degrees was 21.9%, considerably lower than that of this study (40.4%), whereas the percentages of married and employed population were 58.2% and 72.7%, respectively, almost equal to those of this study (59.3% and 76.7%, respectively).

Table 1

Characteristics of the study participants

	N	Per cent
Gender
Male	1621	49.0
Female	1687	51.0
Age, years
20–29	797	24.1
30–39	842	25.5
40–49	837	25.3
50–59	832	25.2
Education
High school	1066	32.2
Junior college/vocational school	905	27.4
University/graduate school	1337	40.4
Marital status
Married	1960	59.3
Unmarried	1184	35.8
Divorced/widowed	164	5.0
Household
One person	464	14.0
More than two people	2844	86.0
Occupation
No occupation	770	23.3
Temporary or part-time job	560	16.9
Full-time job	1978	59.8
Household income
<2.0 million yen*	363	11.0
2.0–3.9 million	777	23.5
4.0–5.9 million	937	28.3
6.0–7.9 million	618	18.7
8.0–9.9 million	347	10.5
10.0+ million	266	8.0
Medical condition
No disease	2449	73.6
Any disease	879	26.4

*One million yen was about US$10 000 at the time of the survey.

Measures

The questionnaire asked about help-seeking intentions for mental illness, medical condition, exposure to mental illness, health literacy, belief about professional help, social network, attitudes to everyday affairs and neighbourhood context. The components of the questionnaire relevant to this study are detailed below.

Help-seeking intentions for mental illness

In the absence of a gold standard, the most commonly used methodology was used for measuring help-seeking intentions in this study.9 Participants were asked to rate how likely they would be to seek help from: (1) someone close to them, such as family, relatives, friends and colleagues (informal sources) and (2) medical professionals (formal sources), respectively, if they were suffering serious mental illness. Those who gave affirmative responses on a four-point scale (certainly yes/probably yes/probably not/certainly not) were counted as having informal and formal help-seeking intentions, respectively. Those who gave negative responses to both questions were counted as having no help-seeking intentions.

Medical condition

Participants were asked to report whether they had any chronic disease undergoing medical treatment. The list included hypertension, diabetes, dyslipidaemia, stroke, heart trouble, renal failure, cancer, insomnia, depression and others.

Exposure to mental illness

Participants were asked about their psychiatric history—whether they had ever consulted health professionals about their mental health. The Reported and Intended Behaviour Scale (RIBS)10 was used to determine the extent of participants’ contact with people who were mentally ill. The first subscale consists of four questions: living with, working with, living near and having a close friendship with people with mental illness, either at present or in the past. Those who answered ‘yes’ to at least one question were counted as having had contact with people with mental illness. Participants were also asked whether someone close to them was engaged in psychiatry.

Health literacy

The 14-item Health Literacy Scale (HLS-14)11 was used to measure health literacy. The scale consists of five items for functional literacy, five items for communicative literacy and four items for critical literacy. Respondents choose one of five options in response to each statement. The scores on the items were summed up to give the HLS-14 score (range 14–70 points) for each respondent. Higher scores indicate having better health literacy.

Belief about professional help

Referring to the questionnaires for the European Study of Epidemiology of Mental Disorders,12 perceived effectiveness of professional help was measured using the following two questions: (1) of the people who see a professional for serious mental illness, what per cent do you think are helped? (range 0–100%); (2) of those with serious mental illness who do not get professional help, what per cent do you think get better even without it? (range 0–100%). The percentages on the two questions were subtracted (question 1 minus question 2) and then the answers were trichotomised into positive (1<%, better than no help), neutral (0%, equal to no help) and negative (<−1%, worse than no help). Participants were also asked whether they would be embarrassed if their friends knew they were getting professional help for mental illness.

Social network

The abbreviated Lubben Social Network Scale (LSNS-6)13 14 was used to measure social network. The scale consists of three items for family ties and three items for friendship ties. Respondents choose one of six options in response to each statement. The scores on the items were summed up to give the LSNS-6 score (range 6–36 points) for each respondent. Higher scores indicate having greater ties to family and friends.

Attitudes to everyday affairs

Participants were asked to rate how likely they would be to talk with someone close to them about a problem that brought stress and distress into their everyday lives. The question was derived from the Comprehensive Survey of Living Conditions (one of the statistical surveys by the Japanese Government). Those who gave affirmative responses on a four-point scale (certainly yes/probably yes/probably not/certainly not) were considered as having a tendency to consult about everyday affairs. Participants were also asked whether they felt reluctant to get help from others.

Neighbourhood context

A variety of measures of neighbourhood context have been proposed, but none of them is recommended as a gold standard. Neighbourhood is characterised as a geographically localised community often with face-to-face interactions among members. Referring to the questionnaire for the Health Survey of People Affected by the Great East Japan Earthquake,15 four specific features of neighbourhood context relevant to neighbourhood social capital were assessed using the following statements, respectively: (1) neighbours say hello whenever they pass each other (communicativeness); (2) neighbours trust in each other (trustfulness); (3) neighbours help each other (helpfulness); and (4) neighbours work together to solve neighbourhood problems (cooperativeness). Respondents choose one of five options (strongly agree/agree/not sure/disagree/strongly disagree) in response to each statement. The internal consistency was adequate (Cronbach α=0.87). For analysis, the responses were dichotomised into positive (strongly agree/agree) and negative (not sure/disagree/strongly disagree).

Statistical analysis

The percentages of participants who expressed help-seeking intentions were compared using χ2 test. Significant variables on the univariate analysis were incorporated into a multiple logistic regression model to identify individual and neighbourhood factors independently associated with help-seeking intentions. Adjusted ORs and 95% CIs were calculated from the models.

Path analysis with structural equation modelling was performed to test the hypothesis model linking individual and neighbourhood factors to help-seeking intentions for mental illness (figure 1). In case of serious mental illness, formal (professional) help must be the best way to solve the problem. A formal help-seeking intention was therefore placed in the structural equation model as the outcome variable. On the basis of previous studies,5 16–18 an informal help-seeking intention was assumed to bring the formal help-seeking intention. Besides sociodemographics, significant predictors derived from the multiple logistic regression analysis were placed in position according to the most plausible hypothesis. The strength of the relationship between two variables was estimated as a standardised regression weight (ie, path coefficient, β). While there are no established guidelines regarding sample size requirements for structural equation modelling, a generally accepted rule of thumb is that the minimum sample size should ideally be 20 times the number of variables in the model.19 The model generated in this study consisted of 14 variables and thus the final sample of 3308 was sufficient for path analysis. Model fitness was assessed by goodness of fit index (GFI), adjusted goodness of fit index (AGFI) and root mean square error of approximation (RMSEA). For GFI and AGFI, a value of >0.9 indicates a good fit, and for RMSEA, a value of <0.08 is considered to be acceptable.20 The initial model was improved by trimming paths with non-significant contributions. The final model consisted of paths with a path coefficient of >0.05 or <−0.05 (p<0.05).

All statistical analyses except for the path analysis were performed using SAS V.9.4 software (SAS Institute, Cary, North Carolina, USA). The path analysis was performed using IBM SPSS Amos V.22.0 (IBM Corp, Armonk, New York, USA). Significant levels were set at p<0.05.

Results

Table 2 shows the percentages of participants who expressed the help-seeking intentions for mental illness. Of the 3308 participants, 67.7% (n=2241) and 75.6% (n=2500) reported that they would seek help from informal and formal sources, respectively, in case of serious mental illness. The majority (n=1938, 58.6%) expressed both informal and formal help-seeking intentions. All the individual (A, B, C, D) and neighbourhood (E) factors showed significant associations with either or both informal and formal help-seeking intentions in univariate analyses. Contrary to theoretical expectations, help-seeking intentions were more frequently observed in those who reported embarrassment towards professional help. This factor was considered irrelevant and removed from further analysis.

Table 2

Percentages of participants who expressed help-seeking intentions for mental illness

	N	Informal sources			Formal sources
A. Sociodemographics
Gender
Male	1621	967	59.7%	<0.001	1170	72.2%	<0.001
Female	1687	1274	75.5%		1330	78.8%
Age, years
20–29	797	530	66.5%	0.483	551	69.1%	<0.001
30–39	842	584	69.4%		638	75.8%
40–49	837	574	68.6%		647	77.3%
50–59	832	553	66.5%		664	79.8%
Education
High school	1066	682	64.0%	<0.001	765	71.8%	0.002
Junior college/vocational school	905	651	71.9%		706	78.0%
University/graduate school	1337	908	67.9%		1029	77.0%
Marital status
Married	1960	1448	73.9%	<0.001	1543	78.7%	<0.001
Unmarried	1184	696	58.8%		829	70.0%
Divorced/widowed	164	97	59.1%		128	78.0%
Household
One person	464	251	54.1%	<0.001	326	70.3%	0.004
More than two people	2844	1990	70.0%		2174	76.4%
Occupation
No occupation	770	576	74.8%	<0.001	594	77.1%	0.506
Temporary or part-time job	560	389	69.5%		422	75.4%
Full-time job	1978	1276	64.5%		1484	75.0%
Household income
<2.0 million yen*	363	207	57.0%	<0.001	243	66.9%	<0.001
2.0–3.9 million	777	498	64.1%		569	73.2%
4.0–5.9 million	937	643	68.6%		697	74.4%
6.0–7.9 million	618	436	70.6%		490	79.3%
8.0–9.9 million	347	259	74.6%		280	80.7%
10.0+ million	266	198	74.4%		221	83.1%
B. Medical condition and exposure to mental illness
Medical condition
No disease	2449	1666	68.0%	0.829	1786	72.9%	<0.001
Any disease	879	400	45.5%		714	81.2%
Psychiatric history
No	2689	1821	67.7%	0.949	1983	73.7%	<0.001
Yes	619	420	67.9%		517	83.5%
Contact with people with mental illness
No	2006	1260	62.8%	<0.001	1421	70.8%	<0.001
Yes	1302	981	75.3%		1079	82.9%
Familiar people engaged in psychiatry
No	3157	2125	67.3%	0.015	2382	75.5%	0.452
Yes	151	116	76.8%		118	78.1%
C. Health literacy and belief about professional help
Health literacy (HLS-14)
Low	1853	1097	59.2%	<0.001	1243	67.1%	<0.001
High	1455	1144	78.6%		1257	86.4%
Embarrassment toward professional help
No	1644	1033	62.8%	<0.001	1133	68.9%	<0.001
Yes	1664	1208	72.6%		1367	82.2%
Perceived effectiveness of professional help
Negative	287	165	57.5%	<0.001	160	55.7%	<0.001
Neutral	869	495	57.0%		533	61.3%
Positive	2152	1581	73.5%		1807	84.0%
D. Social network and attitudes to everyday affairs
Social network (LSNS-6)
Low	1891	1120	59.2%	<0.001	1360	71.9%	<0.001
High	1417	1121	79.1%		1140	80.5%
Tendency to consult about everyday affairs
No	1675	817	48.8%	<0.001	1152	68.8%	<0.001
Yes	1633	1424	87.2%		1348	82.5%
Reluctance to get help
No	1713	1220	71.2%	<0.001	1273	74.3%	0.080
Yes	1595	1021	64.0%		1227	76.9%
E. Neighbourhood context
Communicative neighbourhood
No	1221	675	55.3%	<0.001	770	63.1%	<0.001
Yes	2087	1566	75.0%		1730	82.9%
Trustful neighbourhood
No	2550	1651	64.7%	<0.001	1870	73.3%	<0.001
Yes	758	590	77.8%		630	83.1%
Helpful neighbourhood
No	2311	1448	62.7%	<0.001	1657	71.7%	<0.001
Yes	997	793	79.5%		843	84.6%
Cooperative neighbourhood
No	2045	1227	60.0%	<0.001	1434	70.1%	<0.001
Yes	1263	1014	80.3%		1066	84.4%

*One million yen was about US$10 000 at the time of the survey.

Table 3 shows the results of multiple logistic regression analysis. The following three individual and one neighbourhood factor were significantly associated with informal and formal help-seeking intentions: contact with people with mental illness, health literacy, perceived effectiveness of professional help, tendency to consult about everyday affairs and communicative neighbourhood. Besides these, marital status, social network and cooperative neighbourhood, were significantly associated with an informal help-seeking intention, while medical condition and psychiatric history were significantly associated with a formal help-seeking intention. The highest ORs for informal and formal help-seeking intentions were found in tendency to consult about everyday affairs (OR 5.21) and perceived effectiveness of professional help (OR 2.16), respectively.

Table 3

Logistic regression predicting help-seeking intentions for mental illness

	Informal sources			Formal sources
	OR	95% CI		OR	95% CI
Gender
Female	1.18	0.98	1.43	0.98	0.81	1.20
Age
Plus 10 years	0.92	0.84	1.01	1.08	0.98	1.19
Education
High school	0.92	0.76	1.11	0.86	0.71	1.04
Marital status
Unmarried	0.77*	0.61	0.96	0.90	0.71	1.13
Divorced/widowed	0.60*	0.40	0.91	0.89	0.57	1.41
Household
One person	1.05	0.80	1.38	0.80	0.60	1.05
Occupation
No occupation	1.14	0.90	1.44	0.85	0.67	1.07
Household income
Plus 2 million yen	1.03	0.96	1.10	1.05	0.98	1.13
Medical condition
Any disease	0.94	0.77	1.16	1.52***	1.20	1.92
Psychiatric history
Yes	0.99	0.79	1.26	1.66***	1.27	2.17
Contact with people with mental illness
Yes	1.39***	1.15	1.68	1.27*	1.05	1.55
Familiar people engaged in psychiatry
Yes	1.03	0.66	1.61	0.80	0.51	1.24
Health literacy (HLS-14)
Plus 1 point	1.06***	1.04	1.07	1.07***	1.06	1.09
Perceived effectiveness of professional help
Positive	1.43***	1.26	1.62	2.16***	1.90	2.45
Social network (LSNS-6)
Plus 1 point	1.04***	1.02	1.06	1.02	0.99	1.03
Tendency to consult about everyday affairs
Yes	5.21***	4.31	6.30	1.66***	1.37	2.02
Reluctance to get help
No	1.26**	1.06	1.50	0.78**	0.65	0.93
Communicative neighbourhood
Yes	1.30*	1.06	1.58	1.78***	1.45	2.18
Trustful neighbourhood
Yes	0.91	0.68	1.21	0.91	0.67	1.24
Helpful neighbourhood
Yes	1.17	0.88	1.56	1.18	0.87	1.61
Cooperative neighbourhood
Yes	1.50***	1.18	1.89	1.22	0.96	1.56

*p<0.05, **p<0.01, ***p<0.001.

Figure 2 shows the results of path analysis. After trimming paths with non-significant contributions, the final model resulted in a better fit to the data (GFI 0.946; AGFI 0.918; RMSEA 0.072, 90% CI 0.068 to 0.075). An informal help-seeking intention had the greatest direct effect on a formal help-seeking intention. Besides this, psychiatric history, health literacy, perceived effectiveness of professional help and communicative neighbourhood had a direct effect on a formal help-seeking intention. Tendency to consult about everyday affairs and cooperative neighbourhood had an indirect effect on a formal help-seeking intention through its effect on an informal help-seeking intention.

Figure 2

Path diagram for help-seeking intentions for mental illness. Rectangles were observed variables. Ellipses were latent variables. Values on the single-headed arrows were standardised regression weights. Values on the double-headed arrows were correlation coefficients. Model fitness: GFI 0.946; AGFI 0.918; RMSEA 0.072 (90% CI 0.068 to 0.075). AGFI, adjusted goodness of fit index; GFI, goodness of fit index; RMSEA, root mean square error of approximation.

Discussion

Causal effect of neighbourhood context, or neighbourhood effect, has been reported on various health outcomes including mental illness, whereas the methodology for estimating neighbourhood effects, including definitions of neighbourhood, measures of neighbourhood context and analytical models, varies widely across studies.21 22 In the absence of established methodology, this study examined four specific features of neighbourhood context relevant to neighbourhood social capital and their associations with help-seeking intentions for mental illness. A number of studies have been conducted to identify the individual factors that may inhibit or facilitate help-seeking for mental illness, but less is known about the neighbourhood factors. Moreover, to date, there have been few attempts to elucidate multifactorial mechanisms for help-seeking using structural equation modelling. This is the first study to illustrate the pathways linking individual and neighbourhood factors to informal and formal help-seeking intentions and bore out the hypothesis that neighbourhood context contributes to help-seeking intentions for mental illness.

The final structural equation model (figure 2) along with the results of multiple logistic regression analysis revealed the individual and neighbourhood factors that may directly or indirectly affect help-seeking decision-making. The neighbourhood factors showed a relatively modest but significant effect compared to the individual factors. These results support the expectation that neighbourhood context, or more specifically neighbourhood social capital, may exert influence on help-seeking for mental illness, as it does on other health behaviours.7 Moreover, the significant positive effect of communicative neighbourhood seems to confirm the power of daily interactions with weak ties.23 People who often interact with weak ties are more likely to have a sense of belonging and thus less likely to hesitate to seek help from people around them. Creating a neighbourhood with a communicative atmosphere may be worth considering as a possible public health strategy for encouraging help-seeking.

In the multiple logistic regression analysis, the highest ORs for informal and formal help intentions were found in tendency to consult about everyday affairs and perceived effectiveness of professional help, respectively. In the path analysis, tendency to consult about everyday affairs and health literacy were represented as a key player in help-seeking decision-making. Tendency to consult about everyday affairs seems to depend largely on personality, so that it may be difficult to achieve drastic changes in this factor using a public health approach. In contrast, health literacy skills can be developed through community-based educational outreach.24 Improved health literacy will contribute to a better understanding of the effectiveness of professional help, which will increase the probability of formal help-seeking.12 Developing health literacy skills may be worth considering as another possible public health strategy for encouraging help-seeking.

The multiple logistic regression analysis showed no significant association between sociodemographics and help-seeking intentions, except between marital status and informal help-seeking intention. Meanwhile, the path analysis showed that male gender, older age, unmarried status, lower education and lower income were associated with decreased likelihoods of help-seeking intentions through their effects on tendency to consult about everyday affairs and health literacy. More attention should be paid to these high-risk groups when implementing public health strategies for encouraging help-seeking.

This study provides the first step towards understanding the role of neighbourhood in the help-seeking process; however, it has a number of potential limitations. First, the study participants were recruited from a nationwide panel of an online research company. As described in the Methods section, the study participants included twice as many highly educated people as in the Japanese population. Although we confirmed that the distribution of HLS-14 scores in the study participants was quite similar to that obtained from our previous paper-based survey in Japanese healthcare facilities,25 the selection bias may have influenced the results to some extent. Second, the method of measuring help-seeking intentions was based on the most commonly used methodology,9 but its validity has not been confirmed yet. Participants were asked to imagine themselves with serious mental illness and then report their help-seeking intentions. Because no detailed description was given, their answers depended on how they imagined the severity of the condition. Previous studies suggested that the probability of formal help-seeking for mental illness depends on severity of illness.18 26 27 The percentages of informal and formal help-seeking intentions, and the magnitude of individual and neighbourhood factors, may vary with different severity assumptions. Third, although the final structural equation model revealed an acceptable fit to the data, it still leaves room for further improvement. The HLS-14 and the LSNS-6 were validated in Japanese people,11 14 but the other instruments used in the survey were not. Neighbourhood physical environments such as population density and healthcare resources, which can affect mental health,22 were not included in the analysis. Fourth, the study design is cross-sectional and self-reported, so we cannot reject the possibility of reverse causation or common method bias. Further studies are needed to provide definitive evidence for the role of neighbourhood in the help-seeking process and to elucidate in more detail multifactorial mechanisms for help-seeking. Moreover, the relationship between help-seeking intentions and actual help-seeking should be investigated in future.

Conclusion

Help-seeking intentions for mental illness were directly associated with neighbourhood context as well as individual characteristics. Especially note that living in a communicative neighbourhood and having adequate health literacy were acknowledged as possible facilitating factors for both informal and formal help-seeking for mental illness. The effectiveness of efforts to increase help-seeking may be limited if only interventions targeted to individual factors are implemented. It may be worth attempting to incorporate community-based interventions for creating a neighbourhood with a communicative atmosphere and those for developing health literacy skills into public health strategies for encouraging help-seeking or suicide prevention policies.