| Literature DB >> 36245803 |
Noémie Letellier1, Steven Zamora1, Jiue-An Yang2, Dorothy D Sears3,4,5, Marta M Jankowska2, Tarik Benmarhnia1.
Abstract
Accumulating evidence links cardiometabolic health with social and environmental neighborhood exposures, which may contribute to health inequities. We examined whether environmental characteristics were individually or jointly associated with insulin resistance, hypertension, obesity, type 2 diabetes, and metabolic syndrome in San Diego County, CA. As part of the Community of Mine Study, cardiometabolic outcomes of insulin resistance, hypertension, BMI, diabetes, and metabolic syndrome were collected in 570 participants. Seven census tract level characteristics of participants' residential environment were assessed and grouped as follows: economic, education, health care access, neighborhood conditions, social environment, transportation, and clean environment. Generalized estimating equation models were performed, to take into account the clustered nature of the data and to estimate β or relative risk (RR) and 95 % confidence intervals (CIs) between each of the seven environmental characteristics and cardiometabolic outcomes. Quantile g-computation was used to examine the association between the joint effect of a simultaneous increase in all environmental characteristics and cardiometabolic outcomes. Among 570 participants (mean age 58.8 ± 11 years), environmental economic, educational and health characteristics were individually associated with insulin resistance, diabetes, obesity, and metabolic syndrome. In the mixture analyses, a joint quartile increase in all environmental characteristics (i.e., improvement) was associated with decreasing insulin resistance (β, 95 %CI: -0.09, -0.18-0.01)), risk of diabetes (RR, 95 %CI: 0.59, 0.36-0.98) and obesity (RR, 95 %CI: 0.81, 0.64-1.02). Environmental characteristics synergistically contribute to cardiometabolic health and independent analysis of these determinants may not fully capture the potential health impact of social and environmental determinants of health.Entities:
Keywords: Area-level characteristics; Cardiovascular health; Health inequities; Mixture approach; Neighborhood determinants; Quantile g-computation; Social determinants of health
Year: 2022 PMID: 36245803 PMCID: PMC9562428 DOI: 10.1016/j.pmedr.2022.102005
Source DB: PubMed Journal: Prev Med Rep ISSN: 2211-3355
Distribution of participants characteristics from the Community of Mine Study (N = 570).
| n, (%) | |
|---|---|
| Socioeconomic characteristics | |
| Female | 318 (55.8) |
| Age | 58.8 (11.0) |
| Hispanics/Latinos | 241 (42.3) |
| Income | |
| <30 k | 161 (28.2) |
| 30 k to 55 k | 134 (23.5) |
| >55 k | 275 (48.2) |
| Cardiometabolic outcomes | |
| HOMA-IR | 2.1 (1.3–3.6) |
| Obesity | 198 (34.7) |
| Diabetes (N = 566) | 49 (8.7) |
| Hypertension | 133 (23.3) |
| Presence of MetS (N = 565) | 114 (20.0) |
HOMA-IR: Homeostatic Model Assessment of Insulin Resistance; MetS: Metabolic Syndrome.
Obesity: BMI ≥ 30 kg/m2. Hypertension: ≥130 mmHg systolic or ≥ 80 mmHg diastolic. Type 2 diabetes: blood glucose level > 125 mg/dL. Insulin resistance using the HOMA-IR: fasting plasma insulin (mlU/L) × fasting plasma glucose (mg/dL) /22.5. MetS: presence of at least three of the following: waist circumference > 102 cm for men, >88 cm for women; triglycerides ≥ 150 mg/dL; HDL cholesterol < 40 mg/dL in men, <50 mg/dL in women; hypertension ≥ 130/≥80 mmHg; and fasting glucose ≥ 110 mg/dL.
mean (SD).
median (IQR).
Associations between continuously measured environmental characteristics and cardiometabolic outcomes (N = 570).
| Economic | Education | Health care access | Neighborhood | Social | Transportation | Clean environment | |
|---|---|---|---|---|---|---|---|
| β (95 % CI) | |||||||
| Insulin Resistance (N = 566) | −0.05 (−0.10–0.01) | −0.04 (−0.08–0.01) | −0.04 (−0.08–0.01) | 0.00 (−0.03–0.02) | −0.01 (−0.06–0.04) | −0.02 (−0.04–0.01) | 0.01 (−0.02–0.03) |
| RR (95 % CI) | |||||||
| Hypertension | 0.92 (0.81–1.05) | 1.01 (0.90–1.13) | 0.94 (0.84–1.05) | 0.99 (0.91–1.07) | 0.96 (0.85–1.08) | 0.98 (0.92–1.04) | 1.01 (0.94–1.08) |
| Obesity | 0.86 (0.77–0.95) | 0.90 (0.83–0.98) | 0.92 (0.85–0.99) | 0.96 (0.91–1.02) | 0.92 (0.83–1.01) | 0.97 (0.92–1.02) | 1.03 (0.98–1.08) |
| Diabetes (N = 566) | 0.68 (0.52–0.89) | 0.90 (0.74–1.08) | 0.72 (0.60–0.86) | 0.95 (0.85–1.06) | 0.88 (0.69–1.11) | 0.89 (0.78–1.01) | 0.98 (0.88–1.10) |
| MetS (N = 565) | 0.97 (0.82–1.14) | 0.85 (0.76–0.96) | 0.97 (0.85–1.10) | 0.93 (0.87–1.00) | 1.14 (0.98–1.33) | 0.96 (0.89–1.04) | 1.04 (0.97–1.13) |
HOMA-IR: Homeostatic Model Assessment of Insulin Resistance; MetS: Metabolic Syndrome.
Obesity: BMI ≥ 30 kg/m2. Hypertension: ≥130 mmHg systolic or ≥ 80 mmHg diastolic. Type 2 diabetes: blood glucose level > 125 mg/dL. Insulin resistance using the HOMA-IR: fasting plasma insulin (mlU/L) × fasting plasma glucose (mg/dL) /22.5. MetS: presence of at least three of the following: waist circumference > 102 cm for men, >88 cm for women; triglycerides ≥ 150 mg/dL; HDL cholesterol < 40 mg/dL in men, <50 mg/dL in women; hypertension ≥ 130/≥80 mmHg; and fasting glucose ≥ 110 mg/dL.
Models were adjusted for sex, age, race/ethnicity, income, smoking and BMI (except for obesity and MetS).
Quantile g-computation estimates for the association between increasing all the environmental characteristics by a quartile within the overall mixture (N = 570).
| Insulin Resistance (N = 566) | −0.09 (−0.18–0.01) |
| Hypertension | 0.93 (0.69–1.24) |
| Obesity | 0.81 (0.64–1.02) |
| Diabetes (N = 566) | 0.59 (0.36–0.98) |
| MetS (N = 565) | 0.87 (0.64–1.19) |
HOMA-IR: Homeostatic Model Assessment of Insulin Resistance; MetS: Metabolic Syndrome.
Obesity: BMI ≥ 30 kg/m2. Hypertension: ≥130 mmHg systolic or ≥ 80 mmHg diastolic. Type 2 diabetes: blood glucose level > 125 mg/dL. Insulin resistance using the HOMA-IR: fasting plasma insulin (mlU/L) × fasting plasma glucose (mg/dL) /22.5. MetS: presence of at least three of the following: waist circumference > 102 cm for men, >88 cm for women; triglycerides ≥ 150 mg/dL; HDL cholesterol < 40 mg/dL in men, <50 mg/dL in women; hypertension ≥ 130/≥80 mmHg; and fasting glucose ≥ 110 mg/dL.
*Models were adjusted for sex, age, race/ethnicity, income, smoking and BMI (except for obesity and MetS).
Fig. 1Weights representing the proportion of the positive or negative partial effect in the quantile g-computation models.