Table 2. The distribution of milk and dairy products consumption frequency among Chinese middle and high school students in 2016–2017.
| Types of milk and products | Consumption frequency | Gender | Region | Total | ||||||||||||||
| Male | Female | χ2 | P | Urban | Rural | χ2 | P | |||||||||||
| n | % | n | % | n | % | n | % | n | % | |||||||||
| Liquid milk | ≥1 time/day | 4,172 | 29.4 | 3,673 | 25.8 | 51.9510 | <0.0001 | 4,845 | 35.7 | 3,000 | 20.2 | 1,171.6262 | <0.0001 | 7,845 | 27.6 | |||
| 4–6 times/week | 976 | 6.9 | 961 | 6.8 | 1,101 | 8.1 | 836 | 5.6 | 1,937 | 6.8 | ||||||||
| 1–3 times/week | 274,2 | 19.3 | 2,958 | 20.8 | 2,702 | 19.9 | 2,998 | 20.2 | 5,700 | 20.0 | ||||||||
| <1 time/week | 327 | 2.3 | 393 | 2.8 | 306 | 2.3 | 414 | 2.8 | 720 | 2.5 | ||||||||
| Don't consume | 5,990 | 42.2 | 6,259 | 43.9 | 4,635 | 34.1 | 7,614 | 51.2 | 12,249 | 43.1 | ||||||||
| Milk powder | ≥1 time/day | 273 | 1.9 | 330 | 2.3 | 39.4260 | <0.0001 | 351 | 2.6 | 252 | 1.7 | 101.7397 | <0.0001 | 603 | 2.1 | |||
| 4–6 times/week | 47 | 0.3 | 78 | 0.6 | 78 | 0.6 | 47 | 0.3 | 125 | 0.4 | ||||||||
| 1–3 times/week | 316 | 2.2 | 424 | 3.0 | 458 | 3.4 | 282 | 1.9 | 740 | 2.6 | ||||||||
| <1 time/week | 89 | 0.6 | 134 | 0.9 | 109 | 0.8 | 114 | 0.8 | 223 | 0.8 | ||||||||
| Don't consume | 13,482 | 94.9 | 13,278 | 93.2 | 12,593 | 92.7 | 14,167 | 95.3 | 26,760 | 94.1 | ||||||||
| Yogurt | ≥1 time/day | 2,474 | 17.4 | 2,854 | 20.0 | 237.5455 | <0.0001 | 3,087 | 22.7 | 2,241 | 15.1 | 546.9763 | <0.0001 | 5,328 | 18.7 | |||
| 4–6 times/week | 818 | 5.8 | 930 | 6.5 | 987 | 7.3 | 761 | 5.1 | 1,748 | 6.1 | ||||||||
| 1–3 times/week | 4,135 | 29.1 | 4,867 | 34.2 | 4,484 | 33.0 | 4,518 | 30.4 | 9,002 | 31.6 | ||||||||
| <1 time/week | 691 | 4.9 | 748 | 5.3 | 634 | 4.7 | 805 | 5.4 | 1,439 | 5.1 | ||||||||
| Don't consume | 6,089 | 42.9 | 4,845 | 34.0 | 4,397 | 32.4 | 6,537 | 44.0 | 10,934 | 38.4 | ||||||||
| Other milk products | ≥1 time/day | 103 | 0.7 | 120 | 0.8 | 23.3586 | 0.0001 | 130 | 1.0 | 93 | 0.6 | 162.2505 | <0.0001 | 223 | 0.8 | |||
| 4–6 times/week | 31 | 0.2 | 30 | 0.2 | 31 | 0.2 | 30 | 0.2 | 61 | 0.2 | ||||||||
| 1–3 times/week | 289 | 2.0 | 376 | 2.6 | 428 | 3.2 | 237 | 1.6 | 665 | 2.3 | ||||||||
| <1 time/week | 171 | 1.2 | 235 | 1.7 | 279 | 2.1 | 127 | 0.9 | 406 | 1.4 | ||||||||
| Don't consume | 13,613 | 95.8 | 13,483 | 94.7 | 12,721 | 93.6 | 14,375 | 96.7 | 27,096 | 95.2 | ||||||||
| Total milk and products | ≥1 time/day | 6,292 | 44.3 | 6,264 | 44.0 | 43.4343 | <0.0001 | 7,369 | 54.2 | 5,187 | 34.9 | 1,357.4860 | <0.0001 | 12,556 | 44.1 | |||
| 4–6 times/week | 1,756 | 12.4 | 1,975 | 13.9 | 1,865 | 13.7 | 1,866 | 12.6 | 3,731 | 13.1 | ||||||||
| 1–3 times/week | 3,145 | 22.1 | 3,236 | 22.7 | 2,479 | 18.2 | 3,902 | 26.3 | 6,381 | 22.4 | ||||||||
| <1 time/week | 384 | 2.7 | 465 | 3.3 | 294 | 2.2 | 555 | 3.7 | 849 | 3.0 | ||||||||
| Don't consume | 2,630 | 18.5 | 2,304 | 16.2 | 1,582 | 11.64 | 3,352 | 22.55 | 4,934 | 17.3 | ||||||||