Table 2.
Descriptive statistics of the variables used in regression analysis
| 2006 | 2009 | |||
|---|---|---|---|---|
| Mean or % | SD | Mean or % | SD | |
| Allostatic load score (unweighted) | — | — | 3.0 | 2.4 |
| Allostatic load score (weighted) | — | — | 0.8 | 0.7 |
| Age (years) | 50.8 | 13.5 | 50.8 | 15.0 |
| Male | 45.6 | — | 46.7 | — |
| Married | 88.5 | — | 84.9 | — |
| Education | ||||
| No school | 15.2 | — | 12.7 | — |
| Elementary school | 30.6 | — | 28.9 | — |
| Middle school | 31.0 | — | 34.6 | — |
| High school or equivalent | 18.6 | — | 18.2 | — |
| College or above | 4.6 | — | 5.6 | — |
| Occupation | ||||
| Unemployed | 39.5 | — | 41.3 | — |
| Farmer | 32.8 | — | 28.6 | — |
| Unskilled | 15.7 | — | 16.9 | — |
| Skilled/Professional | 12.0 | — | 13.1 | — |
| Household income per capita (RMB) | 8,062 | 10,956 | 11,685 | 14,302 |
| Urbanization index | 65.9 | 19.1 | 66.9 | 19.5 |
| Urban residence | 26.0 | 29.7 | — | |
| Smoking | ||||
| None | 73.3 | — | 72.5 | — |
| < 1 pack per day | 12.0 | — | 12.9 | — |
| >= 1 pack per day | 14.6 | — | 14.6 | — |
| Drinking | ||||
| None | 68.9 | — | 67.5 | — |
| Monthly | 7.5 | — | 11.5 | — |
| Weekly | 12.4 | — | 11.5 | — |
| Daily | 11.1 | — | 9.5 | — |
| Work-related PA | ||||
| Very light | 24.1 | 29.6 | — | |
| Light | 20.2 | 22.8 | — | |
| Moderate | 14.5 | 13.7 | — | |
| Heavy or very heavy | 41.3 | 34.0 | — | |
| Leisure PA | 9.0 | 9.5 | — | |
| % of daily energy intake from fat | 28.2 | 11.8 | 30.7 | 11.6 |
| Region | ||||
| Northeast | 20.7 | 20.4 | — | |
| Coastal | 24.1 | 24.1 | — | |
| Inland | 34.2 | 33.9 | — | |
| Mountainous South | 21.1 | 21.6 | — | |
| N | 5,647 | 7,857 | ||
Note: PA = physical activity.