Table 1. Baseline and change of characteristics among 3,200 normal weight participants in the 5-year cohort: CHNS 2006–2011a.
| Variables | Men (n = 1,498) | Women (n = 1,702) | |||
| Baseline | Change within 5 years | Baseline | Change within 5 years | ||
| Age, years | 45.8 (23.9, 63.0) | — | 45.0 (27.0, 62.0) | — | |
| BMI, kg/m2 | 21.3 (18.1, 23.7) | 0.15 (−3.5, 4.6) | 20.9 (17.9, 23.1) | 0.07 (−1.1, 1.6) | |
| Physical activity, MET-hours per week | 284 (23, 358) | −85 (−99, 217)b | 271 (10, 335) | −70.2 (−101, 205)b | |
| Energy intake | 2,010 (1,449, 5,031) | 54 (−235, 1,115)b | 2,008 (1,856, 4,889) | 64 (−201, 1,203)b | |
| Household income, thousand Yuan/year | 9 (1.0, 40.1) | 9.7 (0.4, 10.3)b | 9 (1.5, 45.2) | 9.9 (1.2, 10.4)b | |
| Sleep duration, hours/d | 8 (6, 10) | 0 (−3, 5) | 8 (5, 10) | 0 (−3, 5) | |
| Sedentary behaviour, hours/week | 33 (0, 80) | 0.7 (−5.0, 4.0) | 34 (0, 80) | 1.8 (−7.4, 5.6) | |
| Cigarettes consumption, packs/d | 5 (0, 20) | 0.3 (−10, 12) | 0 (0, 9) | 0 (−3, 5) | |
| Urbanization | |||||
| Urban | 515 | — | 606 | — | |
| Rural | 983 | 1,096 | |||
| Education level | |||||
| Low | 1,031 | — | 1,172 | — | |
| Middle | 294 | — | 334 | — | |
| High | 173 | — | 196 | — | |
| Smoke status | |||||
| Past | 415 | — | 50 | — | |
| Current | 328 | — | 46 | — | |
| Never | 755 | — | 1,606 | — | |
| Beverages intake, mL per day | |||||
| Plain water | 582 (0, 1,440) | 170 (−240, 480) | 574 (0, 1,440) | 161 (−240, 480) | |
| Tea | 364 (0, 1,250) | 76 (−480, 480) | 175 (0, 1,200) | 43 (−480, 480) | |
| Coffee | 6 (0, 24) | 17.4 (0, 24)b | 5 (0, 24) | 10.2 (0, 24)b | |
| CBSDs | 6 (0, 14) | 9.6 (−15.4, 27.8)b | 6 (0, 15) | 10.4 (−14.1, 28.0)b | |
| Non-CBSDs | 8 (0, 14) | 4.8 (0, 27.9) | 11 (0, 14) | 6.6 (0, 28.4) | |
| Sugared fruit drinks | 10 (0, 71) | 10.0 (−14.3, 28.6)b | 11 (0, 64) | 14.8 (−13.2, 30.1)b | |
| Group wine | 4 (0, 4) | 2.4 (0, 4.6)b | 1 (0, 2) | 0.4 (0, 1.5)b | |
| Liquor | 48 (0, 72) | −2.6 (−28.5, 23.0) | 1 (0, 60) | 0 (−5.3, 5.0) | |
| Beer | 97 (0, 215) | −0.3 (−25.0, 25.0) | 10 (0, 220) | −9.8 (−25.0, 25.0)b | |
| Dietary intake, g per day | |||||
| Rice | 318 (0, 600) | −35.1 (−70.1, 11.3) | 306 (0, 600) | −34.6 (−69.0, 12.1) | |
| Wheat | 186 (0, 466) | −34.4 (−68.6, 9.3)b | 170 (0, 510) | −33.9 (−59.4, 8.9)b | |
| Fruits | 45 (0, 308) | 29.9 (−11.7, 42.3)b | 47 (0, 350) | 31.1 (−11.5, 41.6)b | |
| Vegetables | 300 (76.9, 650) | 24.6 (−9.8, 33.2) | 306 (80, 667) | 25.2 (−9.9, 35.8) | |
| Red meats | 61 (0, 200) | 9.8 (−25.6, 36.6)b | 62 (0, 200) | 9.4 (−23.4, 35.2)b | |
| Poultry | 9 (0, 100) | 8 (−23.2, 37.8)b | 9 (0, 100) | 8 (−22.2, 33.7)b | |
BMI, body mass index; MET, metabolic equivalence task; CBSDs, Chinese brand soft drinks; CHNS, China Health and Nutrition Survey; non-CBSDs, non-Chinese brand soft drinks.
aData were presented as mean (fifth percentile, ninety-fifth percentile).
bP-value <0.05.