| Literature DB >> 36253433 |
Asanda Mtintsilana1, Siphiwe N Dlamini2, Witness Mapanga2,3, Ashleigh Craig2, Justin Du Toit4, Lisa J Ware2,4, Shane A Norris2,4,5.
Abstract
Social vulnerability refers to the attributes of society that make people and places susceptible to natural disasters, adverse health outcomes, and social inequalities. Using a social vulnerability index (SVI), we investigated social vulnerability prevalence and its relationship with food insecurity in South Africa (SA). In this nationally representative cross-sectional survey, we calculated SVI scores from 3402 respondents (median age, 35 (26-46) years) using an SVI developed by the United States (US) Centers for Disease Control and prevention (CDC) adapted for a South African context. We measured food insecurity using a modified Community Childhood Hunger Identification Project. Findings classified 20.6% and 20.4% of adults as socially vulnerable and food insecure, respectively. The risk of food insecurity was almost threefold higher in the social vulnerability group (OR 2.76, 95% CI 2.76-2.77, p < 0.001) compared to their counterparts. The SVI could be a useful tool to guide government and policymakers in the facilitation of social relief initiatives for those most vulnerable.Entities:
Keywords: Food insecurity; Inequality; Men; Social vulnerability; South Africa; Women
Year: 2022 PMID: 36253433 PMCID: PMC9574173 DOI: 10.1057/s41271-022-00370-w
Source DB: PubMed Journal: J Public Health Policy ISSN: 0197-5897 Impact factor: 3.526
Fig. 1Population demographics outlining the nine provinces of South Africa in which the survey was conducted. The recruited sample size of 3402 corresponds to 39,640,674 weighted sample
Fig. 2A six-phase stratification random probability sampling method used for sample selection. GIS geographic information system
Fig. 3Social vulnerability domains and indicators used in this study
Social vulnerability and food insecurity characteristics in the South African population
| Domains | Social vulnerability indicators | Median (IQR) | National prevalence (%) |
|---|---|---|---|
| Socio-economic status | Household asset scorea in the lowest quartile (≤ 6 assets) | 4 (3–5) | 31.3 |
| Currently unemployed (excluding students and retired individuals) | 27.6 | ||
| Years of education (< 12 years of formal schooling) | 23.5 | ||
| Household composition and disability | Vulnerable ages (household residents < 18 years in age) | 44.2 | |
| Vulnerable ages (household residents ≥ 65 years in age) | 8.8 | ||
| Housing and transportation | Informal household structure (shack or container) | 5.3 | |
| Household crowdingb (number of household residents in the highest quartile, ≥ 5) | 5 (5–6) | 15.6 | |
| Household does not own a car | 34.8 | ||
| No tap water in house or on plot | 13.5 | ||
| No flush toilet in the house or outside | 25.4 | ||
| Total SVI score | 2 (1–3) | ||
| SVI score ≥ 4 (Socially vulnerable group) | 4 (4–5) | 20.6 | |
| SVI score < 4 | 2 (1–2) | 79.4 | |
| Food secure | 79.6 | ||
| Food insecure | 20.4 | ||
| Food secure | 16.7 | ||
| Food insecure | 35.6 |
aThe median (IQR) of the household asset score for the entire population is 9 (6–12)
bThe median (IQR) of the household crowding score for the sample is 3 (2–4)
Fig. 4Distribution of social vulnerability (%) at provincial (A) and community (B) level. EC Eastern Cape, FS Free State, GP Gauteng Province, KZN KwaZulu-Natal, LP Limpopo Province, MP Mpumalanga, NW North West, NC Northern Cape, WC Western Cape
Fig. 5Social vulnerability prevalence (%) by age groups (A), race (B), education (C), and household monthly income quintiles (D)
Logistic regression predicting likelihood of food insecurity based on social vulnerability characteristics
| Univariate models | Multivariate model | |
|---|---|---|
| OR (95% CI)* | OR (95% CI)* | |
| Social vulnerability indicators | ||
| Household asset score in the lowest quartile (≤ 6 assets) | 2.62 (2.61–2.62) | 2.14 (2.13–2.14) |
| Currently unemployed (excluding students and retired individuals) | 3.43 (3.43–3.44) | 2.53 (2.53–2.53) |
| Years of education (< 12 years of formal schooling) | 2.97 (2.97–2.98) | 1.99 (1.99–1.99) |
| Vulnerable ages (Household residents < 18 years in age) | 1.55 (1.55–1.56) | 1.31 (1.31–1.31) |
| Vulnerable ages (Household residents ≥ 65 years in age) | 1.21 (1.21–1.21) | 1.20 (1.20–1.20) |
| Informal household structure (shack or container) | 2.10 (2.09–2.10) | 1.24 (1.24–1.24) |
| Household crowding (Number of household residents in the highest quartile, ≥ 5) | 1.51 (1.51–1.51) | 1.23 (1.23–1.23) |
| Household does not own a car | 0.21 (0.21–0.21) | 0.31 (0.31–0.31) |
| No tap water in house or on plot | 1.70 (1.70–1.70) | 1.05 (1.05–1.05) |
| No flush toilet in the house or outside | 1.45 (1.44–1.45) | 0.60 (0.60–0.60) |
| Total SVI score | 1.39 (1.39–1.39) | |
| Social vulnerability (SVI score ≥ 4) | 2.76 (2.76–2.77) |
SVI - social vulnerability index
*p < 0.001 for all the models