Table 2.
Parameter estimates (95% confidence intervals) from linear mixed effects models (Series A) predicting BMI (kg/m2) among Chinese adults
| Model 1 | Model 2 | Model 3 | |
|---|---|---|---|
| Age | 0.22 (0.21, 0.23) | 0.19 (0.16, 0.22) | 0.19 (0.16, 0.22) |
| Age2 | −0.002 (−0.002, −0.002) | −0.002 (−0.002, −0.001) | −0.002 (−0.002, −0.001) |
| Gender | −0.09 (−0.18, −0.01) | 0.001 (−0.100, 0.102) | −0.004 (−0.11, 0.10) |
| 1993 | 0.15 (0.10, 0.20) | −0.15 (−0.69, 0.39) | −0.03 (−0.59, 0.53) |
| 1997 | 0.40 (0.35, 0.46) | −1.53 (−2.17, −0.88) | −1.31 (−1.98, −0.64) |
| 2000 | 0.81 (0.76, 0.87) | −2.12 (−2.81, −1.42) | −1.98 (−2.69, −1.26) |
| 2004 | 0.95 (0.88, 1.02) | −1.92 (−2.71, −1.13) | −1.86 (−2.66, −1.05) |
| 2006 | 0.98 (0.91, 1.05) | −1.89 (−2.73, −1.06) | −1.99 (−2.85, −1.14) |
| 2009 | 1.11 (1.03, 1.19) | −1.98 (−2.87, −1.09) | −1.99 (−2.90, −1.09) |
| 1993*Gender | −0.09 (−0.19, 0.00) | −0.09 (−0.18, 0.01) | |
| 1997*Gender | −0.08 (−0.18, 0.02) | −0.09 (−0.19, 0.02) | |
| 2000*Gender | −0.09 (−0.19, 0.02) | −0.08 (−0.18, 0.02) | |
| 2004*Gender | −0.20 (−0.30, −0.09) | −0.18 (−0.29, −0.07) | |
| 2006*Gender | −0.30 (−0.41, −0.19) | −0.29 (−0.40, −0.17) | |
| 2009*Gender | −0.36 (−0.48, −0.24) | −0.35 (−0.47, −0.23) | |
| 1993*Age | 0.02 (−0.01, 0.05) | 0.01 (−0.02, 0.04) | |
| 1997*Age | 0.10 (0.07, 0.14) | 0.09 (0.06, 0.13) | |
| 2000*Age | 0.15 (0.11, 0.19) | 0.14 (0.10, 0.18) | |
| 2004*Age | 0.14 (0.10, 0.18) | 0.13 (0.09, 0.17) | |
| 2006*Age | 0.14 (0.10, 0.18) | 0.14 (0.09, 0.18) | |
| 2009*Age | 0.14 (0.10, 0.10) | 0.13 (0.09, 0.18) | |
| 1993*Age2 | −0.0002 (−0.0006, 0.0002) | −0.0001 (−0.0005, 0.0003) | |
| 1997*Age2 | −0.001 (−0.002, −0.001) | −0.001 (−0.002, −0.001) | |
| 2000*Age2 | −0.002 (−0.002, −0.001) | −0.002 (−0.002, −0.001) | |
| 2004*Age2 | −0.001 (−0.002, −0.001) | −0.001 (−0.002, −0.001) | |
| 2006*Age2 | −0.001 (−0.002, −0.001) | −0.001 (−0.002, −0.001) | |
| 2009*Age2 | −0.001 (−0.002, −0.001) | −0.001 (−0.002, −0.001) | |
| Community Urbanicitya | 0.007 (0.005, 0.009) | ||
| Household Incomeb | 4.43e−06 (2.28e−06, 6.57e−06) | ||
| Urbanicity* Household Income | −5.76e−08 (−8.88e−08, −2.63e−08) | ||
| Mill’s Ratioc | −0.05 (−0.07, −0.02) | −0.04 (−0.07, −0.02) | −0.03 (−0.05, 0.00) |
aMeasured at the community level on a 12-component continuous scale ranging from 0-120 with higher values corresponding to higher levels of urbanicity.
bNet annual. Inflated to 2009.
cInverse predicted probability of being included in a given survey year.