Table 3.
Multivariable Stepwise Linear and Binary Logistic Model for predictors of Waist Change Among South Asian Americans in the MASALA Study
| Logistic regression for Waist gain ≥5% | Linear regression for increase in waist (cm) | |||
|---|---|---|---|---|
| Variable | aOR (95% CI) | p-value | Beta Coefficient (95% CI) | p-value |
| Age | 1.02 (0.99–1.04) | 0.171 | 0.002 (−0.06–0.06) | 0.932 |
| Female sex | 1.82 (1.16–2.87) | 0.009 | 1.07 (−0.14–2.27) | 0.083 |
| BMI | 1.00 (0.94–1.06) | 0.966 | −0.04 (−0.19– −0.12) | 0.632 |
| Marital status | ||||
| Separated/divorced | 2.26 (0.84–6.07) | 0.106 | 2.69 (−0.08–5.47) | 0.057 |
| Widowed | 0.95 (0.38–2.35) | 0.911 | 0.40 (−2.10 –2.90) | 0.753 |
| Single | 0.52 (0.09–2.80) | 0.449 | 4.90 (0.79–9.01) | 0.019 |
| Occupational status | ||||
| Employed full-time/part-time | 0.57 (0.35–0.94) | 0.027 | −1.32 (−2.70– 0.05) | 0.059 |
| Retired | 0.51 (0.26–1.02) | 0.056 | −1.07 (−2.91–0.75) | 0.255 |
| Leptin (per SD) | 1.06 (0.83–1.34) | 0.664 | 0.72 (0.06–1.38) | 0.032 |
| CRP (per SD) | 1.01 (0.85–1.20) | 0.929 | 0.82 (0.34–1.29) | 0.001 |
| Interaction testing | ||||
| BMI** x sex | ||||
| Overweight males | 0.87 (0.44–1.71) | 0.680 | −1.55 (−3.22–0.13) | 0.070 |
| Overweight females | 0.77 (0.38–1.56) | 0.461 | −2.14 (−4.11 - −0.18) | 0.032 |
| Males with obesity | 1.27 (0.46–3.52) | 0.652 | −3.35 (−5.98 - −0.73) | 0.012 |
| Females with obesity | 0.64 (0.23–1.84) | 0.411 | −3.45 (−6.28 - −0.62) | 0.017 |
| BMI ** x leptin (per SD) | ||||
| Overweight individuals | 0.77 (0.45−1.31) | 0.337 | −0.95 (−2.39–0.50) | 0.198 |
| Individuals with obesity | 0.78 (0.42−1.44) | 0.430 | −0.56 (−2.23–1.11) | 0.508 |
| Leptin x sex | ||||
| Females | 1.10 (0.66–1.82) | 0.719 | 1.62 (0.36–2.89) | 0.012 |
| Males | Reference | Reference | ||
| BMI** x CRP | ||||
| Overweight individuals | 1.59 (0.68–3.71) | 0.287 | 0.62 (−0.46–1.70) | 0.262 |
| Individuals with obesity | 1.51 (0.61–3.74) | 0.377 | 1.65 (0.55–2.76) | 0.003 |
| CRP x sex | ||||
| Females | 0.94 (0.67–1.33) | 0.740 | 1.27 (0.34–2.19) | 0.007 |
| Males | Reference | Reference | ||
| BMI **x weight change (gain vs. stable) | ||||
| Normal BMI and weight gain | 3.29 (1.60–6.78) | 0.001 | 3.45 (1.70–5.19) | <0.001 |
| Overweight and weight stable | 0.96 (0.46–1.99) | 0.907 | −1.30 (−2.93–0.33) | 0.118 |
| Overweight and weight gain | 3.49 (1.63–7.48) | 0.001 | 2.34 (0.52–4.16) | 0.012 |
| Obesity and weight stable | 1.06 (0.37–3.07) | 0.911 | −2.62 (−5.08 - −0.15) | 0.037 |
| Obesity and weight gain | 6.23 (1.90–20.41) | 0.003 | 1.31 (−1.55– 4.16) | 0.369 |
| Normal BMI and weight stable | Reference | Reference | ||
aOR: Adjusted odds ratios from multivariable logistic regression models adjusting for age, sex, BMI, marital and occupational status in exam 1.
BMI**: by Asian BMI category