Table 1.
Trends in prevalence of low risk profile and its components by waist circumference (WC) status*
| 1993 | 1997 | 2000 | 2004 | 2006 | 2009 | Δ † | P for trend ‡ | P § | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Men | The simultaneous presence of 4 health metrics‖ (%) | |||||||||
| WC < 90 cm | 17.5 | 16.4 | 16.9 | 14.5 | 16.5 | 15.0 | -2.5 | <0.001 | 0.64 | |
| WC ≥90 cm | 4.2 | 4.7 | 3.7 | 5.1 | 3.4 | 2.0 | -2.2 | 0.004 | ||
| Not currently smoking (%) | ||||||||||
| WC < 90 cm | 37.7 | 40.9 | 42.6 | 43.4 | 45.7 | 43.8 | 6.1 | <0.001 | 0.18 | |
| WC ≥90 cm | 42.9 | 46.5 | 50.1 | 52.0 | 50.7 | 50.6 | 7.7 | 0.140 | ||
| Body mass index <25 kg/m2 (%) | ||||||||||
| WC < 90 cm | 92.8 | 92.5 | 90.1 | 87.8 | 87.8 | 89.0 | -3.8 | 0.0151 | 0.39 | |
| WC ≥90 cm | 44.6 | 28.7 | 32.7 | 35.7 | 28.4 | 26.8 | -17.8 | <0.001 | ||
| Untreated systolic/diastolic blood pressure <120/80 mmHg (%) | ||||||||||
| WC < 90 cm | 50.0 | 42.1 | 41.2 | 37.3 | 38.6 | 37.2 | -12.8 | <0.001 | 0.32 | |
| WC ≥90 cm | 23.2 | 19.1 | 18.0 | 16.5 | 19.1 | 17.8 | -5.4 | 0.006 | ||
| Not having been previously diagnosed with diabetes (%) | ||||||||||
| WC < 90 cm | 100.0 | 99.7 | 99.6 | 99.3 | 98.8 | 98.7 | -1.3 | <0.001 | 0.92 | |
| WC ≥90 cm | 99.9 | 99.0 | 99.1 | 97.9 | 97.3 | 96.3 | -3.6 | <0.001 | ||
| Women | The simultaneous presence of 4 health metrics‖ (%) | |||||||||
| WC < 80 cm | 60.9 | 53.3 | 54.8 | 52.3 | 55.1 | 55.0 | -5.9 | <0.001 | 0.06 | |
| WC ≥80 cm | 30.7 | 24.0 | 25.0 | 24.8 | 25.2 | 25.6 | -5.1 | <0.001 | ||
| Not currently smoking (%) | ||||||||||
| WC < 80 cm | 95.7 | 95.7 | 96.4 | 96.9 | 97.2 | 97.6 | 1.9 | 0.0209 | 0.94 | |
| WC ≥80 cm | 95.8 | 95.6 | 95.5 | 96.8 | 97.6 | 97.6 | 1.8 | <0.001 | ||
| Body mass index <25 kg/m2 (%) | ||||||||||
| WC <80 cm | 95.0 | 94.9 | 93.8 | 94.4 | 94.0 | 95.7 | 0.7 | 0.158 | 0.45 | |
| WC ≥80 cm | 59.4 | 54.6 | 52.7 | 51.4 | 53.9 | 55.0 | -4.4 | 0.0126 | ||
| Untreated systolic/diastolic blood pressure <120/80 mmHg (%) | ||||||||||
| WC < 80 cm | 65.1 | 57.5 | 59.2 | 56.2 | 58.9 | 57.8 | -7.3 | <0.001 | 0.21 | |
| WC ≥80 cm | 47.6 | 40.1 | 42.0 | 43.0 | 40.1 | 39.2 | -8.4 | <0.001 | ||
| Not having been previously diagnosed with diabetes (%) | ||||||||||
| WC < 80 cm | 100.0 | 99.5 | 99.5 | 99.3 | 99.4 | 99.1 | -0.9 | <0.001 | 0.95 | |
| WC ≥80 cm | 100.0 | 99.2 | 98.8 | 98.7 | 98.1 | 98.0 | -2.0 | <0.001 | ||
*Estimates are weighted to be representative of the Chinese population aged 18 to 118 years.
†The sixth survey-the first survey (2009–1993);
‡Trends in prevalence of low risk profile and its components from 1993 to 2009 were assessed by Cochran–Armitage trend testing;
§P for survey * WC interaction terms comparing the first and sixth surveys;
‖The simultaneous presence of not currently smoking, BMI <25 kg/m2, untreated systolic/diastolic BP < 120/80 mmHg, and not having been previously diagnosed with diabetes.