Table 2.
Multivariable Stepwise Binary Logistic and Linear Model for predictors of Weight Change Among South Asian Americans in the MASALA Study
| Variable | Logistic regression for Weight Change ≥ 5% | Linear regression for weight increase (per kg) | ||
|---|---|---|---|---|
| aOR (95% CI) | p-value | Beta coefficient (95% CI) | p-value | |
| Age | 0.98 (0.96–1.01) | 0.100 | 0.05 (−0.08–−0.02) | 0.004 |
| Female Sex | 1.51 (1.02–2.24) | 0.040 | 0.13 (−0.42–0.67) | 0.650 |
| BMI at exam 1 | 0.96 (0.91–1.01) | 0.157 | 0.02 (−0.04–0.09) | 0.489 |
| Years lived in the US | 0.98 (0.96–0.99) | 0.041 | -0.01 (−0.04–0.01) | 0.381 |
|
Glucose tolerance status: normal Prediabetes |
Reference 0.85 (0.54–1.33) |
0.475 | Reference −0.23 (−0.870.41) |
0.483 |
| Diabetes | 0.38 (0.21–0.70) | 0.002 | −1.60 (−2.39–−0.82) | <0.001 |
| Hypertension | 0.70 (0.45–1.06) | 0.087 | −0.19 (−0.75–0.37) | 0.513 |
| Adiponectin (per SD) | 1.39 (1.13–1.71) | 0.002 | 0.34 (0.05–0.62) | 0.019 |
| Interaction testing | ||||
|
BMI**
category x sex Overweight males |
0.42 (0.22–0.82) | 0.011 | −0.73 (−1.61–0.15) | 0.104 |
| Overweight females | 0.51 (0.24–1.07) | 0.076 | −0.60 (−1.64–0.45) | 0.262 |
| Males with obesity | 0.19 (0.06–0.57) | 0.003 | –1.87 (−3.26–−0.47) | 0.009 |
| Females with obesity | 0.38 (0.13–1.16) | 0.089 | −1.08 (−2.58–0.43) | 0.161 |
| Normal BMI | Reference | Reference | ||
| BMI **x glucose tolerance Overweight, no diabetes | 0.56 (0.22–1.41) | 0.216 | 0.07 (−1.22–1.37) | 0.911 |
| Overweight, prediabetes | 0.36 (0.18–0.70) | 0.003 | −1.04 (−1.95–0.14) | 0.024 |
| Overweight, diabetes | 0.66 (0.21–2.05) | 0.475 | −0.54 (−1.92–0.84) | 0.443 |
| Obesity, no diabetes | 0.17 (0.04–0.65) | 0.010 | −2.39 (−4.18–−0.59) | 0.009 |
| Obesity, prediabetes | 0.35 (0.12–1.01) | 0.052 | −1.05 (−2.44–0.35) | 0.141 |
| Obesity, diabetes | 0.10 (0.02–0.54) | 0.007 | −2.18 (−3.99–−0.38) | 0.018 |
| Normal BMI and no diabetes | Reference | Reference | ||
| BMI** x adiponectin (per SD) Overweight | 0.74 (0.58–0.93) | 0.010 | −0.21 (−0.53–0.10) | 0.176 |
| Obesity | 0.65 (0.43–0.97) | 0.034 | −0.35 (−0.89–0.18) | 0.199 |
| Normal BMI | Reference | Reference | Reference | Reference |
| Adiponectin x sex | ||||
| Females | 0.80 (0.54–1.18) | 0.262 | 0.07 (−0.46–0.60) | 0.794 |
| Males | Reference | Reference | ||
| BMI **x waist change groups (stable versus gain) | ||||
| Normal BMI and waist gain | 2.99 (1.41–6.39) | 0.004 | 1.31 (0.35–2.27) | 0.007 |
| Overweight and waist stable | 0.44 (0.23–0.84) | 0.013 | −0.91 (−1.71–−0.11) | 0.025 |
| Overweight and waist gain | 1.57 (0.76–3.25) | 0.224 | 4.59 (0.48–2.33) | 0.003 |
| Obesity and waist stable | 0.20 (0.07–0.61) | 0.005 | –1.06 (−3.10–−0.54) | 0.005 |
| Obesity and waist gain | 1.06 (0.34–3.27) | 0.918 | 4.94 (−0.89–1.92) | 0.469 |
| Normal BMI and waist stable | Reference | Reference | ||
aOR: Adjusted odds ratios from multivariable logistic regression models adjusting for age, sex, BMI, number of years lived in the US at exam 1
BMI**: by Asian BMI category