Table 2.
Characteristic of the participants.
| Total | Males | Females | |||||||
|---|---|---|---|---|---|---|---|---|---|
| n (%)a | Ageb | BMIb | n (%)a | Ageb | BMIb | n (%)a | Ageb | BMIb | |
| Total | 524 | 69.7 ± 5.3 | 26.3 ± 2.5 | 233 (44.5) | 71.0 ± 5.4 | 26.2 ± 3.3 | 291 (55.5) | 68.7 ± 5.1 | 26.3 ± 2.6 |
| Taiyuan | 93 (17.7) | 68.4 ± 5.5c | 26.6 ± 2.2 | 39 (41.9) | 70.2 ± 5.5 | 26.8 ± 2.2c | 54 (58.1) | 67.1 ± 5.2c | 26.4 ± 2.3 |
| Jinan | 96 (18.3) | 69.3 ± 5.1c | 26.5 ± 2.8 | 48 (50.0) | 70.1 ± 5.3 | 26.1 ± 2.4d | 48 (50.0) | 68.5 ± 4.8c | 27.0 ± 3.1 |
| Hefei | 121 (23.1) | 71.0 ± 4.9d | 26.3 ± 2.4 | 53 (43.8) | 71.9 ± 5.3 | 26.2 ± 1.7e | 68 (56.2) | 70.3 ± 4.4d | 26.4 ± 2.8 |
| Nanchang | 116 (22.1) | 70.9 ± 4.6d | 25.7 ± 2.1 | 54 (46.6) | 71.6 ± 4.7 | 25.4 ± 2.0d | 62 (53.4) | 70.2 ± 4.5d | 26.0 ± 2.1 |
| Guangzhou | 98 (18.7) | 68.6 ± 6.0c | 26.2 ± 2.7 | 39 (39.8) | 70.8 ± 6.1 | 26.5 ± 3.0d | 59 (60.2) | 67.1 ± 5.6c | 26.0 ± 2.6 |
| F | 5.965 | 2.286 | 1.112 | 2.663 | 6.252 | 1.233 | |||
| p | <0.001* | 0.059 | 0.351 | 0.033* | <0.001* | 0.297 | |||
aValues presented as numbers (percentage). bValues presented as mean ± SD and compared using one-way ANOVA. *Means that there was a significant difference as the value of p was less than 0.05. F is the statistic in analysis of variance. It is the ratio of inter group mean square (MS inter group) and intra group mean square (MS intra group). c–eThe same symbol indicates that there were no statistically significant differences between the two groups; different symbols indicate that the differences were statistically significant between the two groups. SD, standard deviation; BMI, body mass index. BMI (kg/m2).