Table 3.
Multivariate Analysis of Overweight, Obesity, and Severe Obesity Trends
| Survey year | Overweight |
Obesity |
Severe obesity |
|||
|---|---|---|---|---|---|---|
| OR (95% CI)a | p | OR (95% CI)a | p | OR (95% CI)a | p | |
| 1991 | 1 [reference] | 1 [reference] | 1 [reference] | |||
| 1993 | 1.09 (0.85, 1.40) | 0.497 | 0.95 (0.60, 1.51) | 0.826 | 0.31 (0.06, 1.56) | 0.157 |
| 1997 | 1.34 (1.05, 1.71) | 0.018 | 1.57 (1.03, 2.39) | 0.037 | 1.76 (0.64, 4.86) | 0.275 |
| 2000 | 1.60 (1.26, 2.05) | <0.001 | 1.87 (1.23, 2.87) | 0.004 | 1.50 (0.50, 4.47) | 0.468 |
| 2004 | 2.31 (1.80, 2.97) | <0.001 | 2.31 (1.48, 3.60) | <0.001 | 2.55 (0.88, 7.38) | 0.084 |
| 2006 | 2.26 (1.74, 2.94) | <0.001 | 2.78 (1.79, 4.33) | <0.001 | 4.75 (1.80, 12.54) | 0.002 |
| 2009 | 2.93 (2.28, 3.78) | <0.001 | 3.44 (2.24, 5.27) | <0.001 | 5.70 (2.20, 14.75) | <0.001 |
| 2011 | 4.04 (3.22, 5.05) | <0.001 | 5.43 (3.73, 7.92) | <0.001 | 10.12 (4.27, 24.01) | <0.001 |
| 2015 | 5.09 (4.07, 6.37) | <0.001 | 7.13 (4.92, 10.34) | <0.001 | 15.96 (6.85, 37.19) | <0.001 |
| Continuous (trend)b | 1.23 (1.21, 1.26) | <0.001 | 1.30 (1.26, 1.34) | <0.001 | 1.52 (1.41, 1.63) | <0.001 |
a
Controlling for sex, age, and region.
b
Survey waves of CHNS were regressed to an ordinal variable.
OR, odds ratio; CHNS, China Health and Nutrition Survey.