Table 1 Descriptive statistics for the study variables
Variable | Total sample | Overweight sample | None-overweight sample |
|---|---|---|---|
Proportion/median (P25-P75) | Proportion/median (P25-P75) | Proportion/median (P25-P75) | |
Dependent variable | |||
BMI status (ref: BMI < 24 kg/m2) | |||
 Overweight (BMI ≥ 24 kg/m2) | 0.41 |  |  |
Independent variables | |||
 Motorized traveller (ref: No) |  |  |  |
 Yes | 0.09 | 0.16 | 0.04 |
 Time spent on weekly physical exercise (hours) | 28.50 (14.00–38.00) | 21.00 (3.00–29.00) | 28.00 (14.00–46.00) |
 Population density (person/km2) | 725.62 (257.31–71,392.85) | 897.88 (379.74–95,000.00) | 574.99 (221.02–15,000.00) |
Control variables (demographic and socioeconomic variables) | |||
 Sex (ref: Female) |  |  |  |
 Male | 0.45 | 0.39 | 0.49 |
Age (years) | 58.00 (51.00–68.00) | 57.00 (49.00–62.00) | 58.00 (52.00–69.00) |
Marital status (ref: Single, divorced, or widowed) | |||
 Married | 0.88 | 0.91 | 0.86 |
Education (ref: Primary school or below) | |||
 Junior high school | 0.20 | 0.23 | 0.19 |
 Senior high school or above | 0.11 | 0.14 | 0.08 |
Living area (ref: Rural area) | |||
 Urban area | 0.38 | 0.46 | 0.32 |
Eating frequency (ref: ≤ three times a day) | |||
 > three times a day | 0.87 | 0.89 | 0.86 |
Smoking history (ref: Non-smoker) | |||
 Smoker | 0.38 | 0.31 | 0.42 |
Drinking history (ref: Non-drinker) | |||
 Drinking | 0.32 | 0.29 | 0.35 |
Medical insurance status (ref: No) | |||
 Yes | 0.93 | 0.93 | 0.94 |
Physical health status (ref: Do not have a disease) | |||
 Have a disease | 0.65 | 0.71 | 0.61 |
 Annual household income per capita (Chinese Yuan) | 4794.00 (1210.00–57,926.39) | 4340.00 (1400–60,500.00) | 3410.00 (1040.00–20,200) |
 Annual neighbourhood income per capita (Chinese Yuan) | 3018.00 (1423.00–8800.00) | 3018.00 (1500.00–12,000) | 3000.00 (1400.00–20,000.00) |
Neighbourhood sports facilities (ref: No) | |||
 Yes | 0.64 | 0.65 | 0.64 |
Neighbourhood sports groups (ref: No) | |||
 Yes | 0.52 | 0.55 | 0.50 |