Table 2.
Baseline characteristics of the study population by multi-trajectories.
| Trajectories in Urban Areas | Trajectories in Rural Areas | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| IMP&H&LC | ABM | MP&VHF&VLC | MP&ILF&DHC | p | BM | MP&ILF&DHC | DMP&DHF&IMC | IMP&IHF&DLC | p | |
| (n = 1001, 38.7%) | (n = 857, 33.1%) | (n = 509, 19.7%) | (n = 219, 8.5%) | (n = 1870, 35.1%) | (n = 1135, 21.3%) | (n = 1071, 20.1%) | (n = 1252, 23.5%) | |||
| Age 1 (years) | 40.7 ± 15.3 | 45.5± 14.3 | 38.2 ± 14.6 | 51.9 ± 14.5 | <0.001 | 40.4 ± 11.9 | 47.0 ± 14.5 | 39.4 ± 15.0 | 35.7 ± 12.4 | <0.001 |
| Men (%) | 45.1 | 48.2 | 43.1 | 47.3 | 0.283 | 50.6 | 48.7 | 42.8 | 51.8 | <0.001 |
| North (%) | 31.7 | 39.0 | 19.4 | 43.8 | <0.001 | 36.5 | 47.8 | 24.8 | 29.7 | <0.001 |
| Education (%) | — | — | — | — | <0.001 | — | — | — | — | <0.001 |
| Primary and below | 21.0 | 51.0 | 26.2 | 76.3 | 62.2 | 79.6 | 42.4 | 42.0 | ||
| Junior high | 34.0 | 25.7 | 27.4 | 15.8 | 28.6 | 16.6 | 34.3 | 37.8 | ||
| Senior high and above | 45.0 | 23.3 | 46.4 | 7.9 | 9.2 | 3.8 | 23.3 | 20.2 | ||
| Annual per capita family income (%) | <0.001 | <0.001 | ||||||||
| Low (<10,000 RMB) | 53.2 | 72.1 | 53.8 | 85.7 | 80.6 | 87.1 | 64.0 | 70.9 | ||
| Middle (10,000–20,000 RMB) | 22.0 | 14.3 | 22.1 | 9.8 | 10.4 | 6.9 | 19.2 | 15.4 | ||
| High (>20,000 RMB) | 24.8 | 13.6 | 24.1 | 4.4 | 9.0 | 6.0 | 16.8 | 13.7 | ||
| Smoker 2 (%) | 29.5 | 35.8 | 31.1 | 35.5 | 0.020 | 38.3 | 37.6 | 31.2 | 35.0 | <0.001 |
| Alcohol drinker 3 (%) | 35.6 | 39.9 | 35.1 | 47.7 | 0.004 | 36.3 | 35.6 | 32.4 | 33.9 | 0.136 |
| Protein1 (%) | 13.9 ± 3.1 | 12.1 ± 2.3 | 12.4 ± 3.0 | 11.8 ± 1.9 | <0.001 | 11.7 ± 2.4 | 11.6 ± 1.8 | 12.7 ± 3.2 | 12.0 ± 2.7 | <0.001 |
| Fat 1 (%) | 32.7 ± 9.3 | 27.1 ± 9.7 | 42.2 ± 10.2 | 17.3± 10.0 | <0.001 | 23.0 ± 10.2 | 14.1 ± 7.4 | 34.1 ± 12.1 | 26.6 ± 11.8 | <0.001 |
| Carbohydrate 1 (%) | 52.3 ± 9.9 | 59.9 ± 10.0 | 43.9 ± 10.1 | 69.7 ± 9.9 | <0.001 | 64.4 ± 11.0 | 73.9 ± 7.8 | 52.1 ± 12.5 | 60.1 ± 13.0 | <0.001 |
| Energy intake 1 (kcal/d) | 2232.2 ± 710.7 | 2293.0 ± 668.9 | 2408.8 ± 772.8 | 2,331.1 ± 708.6 | <0.001 | 2422.5 ± 722.1 | 2493.0 ± 745.4 | 2282.8 ± 753.4 | 2345.4 ± 674.3 | <0.001 |
| PA 4 (METs/week) | 146.8 (92.5,241.8) | 251.1 (109.3, 519.9) | 152.3 (88.7, 269.9) | 439.8 (168.0, 667.5) | <0.001 | 475.5 (270.0, 656.0) | 530.6 (348.0, 690.6) | 270.2 (118.0, 480.3) | 340.5 (159.6, 545.6) | <0.001 |
| ST 4 (hours/week) | 21.0 (14.0, 30.5) | 16.0 (8.9, 24.5) | 23.0 (14.0, 33.0) | 9.0 (0.0, 18.5) | <0.001 | 14.0 (7.0, 21.0) | 9.0 (3.5, 15.0) | 14.0 (7.0, 23.0) | 14.0 (7.0, 21.0) | <0.001 |
| BMI 1 (kg/m2) | 20.7 ± 1.8 | 20.9 ± 1.8 | 20.7 ± 1.8 | 20.8 ±1.6 | 0.139 | 20.7 ± 1.7 | 20.6 ± 1.7 | 20.5 ± 1.8 | 20.6 ± 1.7 | 0.060 |
| WC 1 (cm) | 74.9 ± 8.1 | 75.4 ± 7.5 | 74.4 ± 7.8 | 74.6 ±7.5 | 0.131 | 73.6 ± 6.6 | 74.1 ± 7.1 | 73.8 ± 7.1 | 73.4 ± 7.0 | 0.089 |
Abbreviations: Physical activity (PA), sedentary time (ST), body mass index (BMI), waist circumference (WC). 1 The value of this variable in the table is mean ± standard deviation. 2 Smoking status data were missing for 6 and 27 participants in urban and rural populations, respectively. 3 Alcohol drinking data were missing for 26 and 51 participants in urban and rural populations, respectively. 4 The value of this variable in the table is median (interquartile range: Q1, Q3).