Table 12. Trends in prevalence of awareness and treatment among Chinese adults during 1991–2015.
| Group | Prevalence | 1991 | 1993 | 1997 | 2000 | 2004 | 2006 | 2009 | 2011 | 2015 | AC | RC | Ptrend-value |
| AC: absolute change (prevalence in 2015–prevalence in 1991); RC: relative change [(prevalence in 2015–prevalence in 1991)/prevalence in 1991]. | |||||||||||||
| Awareness | |||||||||||||
| All | |||||||||||||
| Crude | 29.4% | 29.0% | 19.6% | 30.6% | 34.2% | 40.1% | 41.5% | 53.0% | 43.8% | 14.4% | 49.0% | < 0.001 | |
| Age-standardized | 24.2% | 19.8% | 12.5% | 21.0% | 22.7% | 26.7% | 25.6% | 34.6% | 27.2% | 3.0% | 12.4% | < 0.001 | |
| Sex | |||||||||||||
| Male | |||||||||||||
| Crude | 23.7% | 26.1% | 16.6% | 25.5% | 29.2% | 35.5% | 37.1% | 47.7% | 41.1% | 17.4% | 73.4% | < 0.001 | |
| Age-standardized | 19.2% | 18.3% | 10.7% | 18.1% | 19.5% | 25.1% | 23.7% | 29.5% | 24.4% | 5.2% | 27.1% | < 0.001 | |
| Female | |||||||||||||
| Crude | 35.8% | 32.1% | 23.1% | 36.4% | 39.7% | 45.0% | 46.1% | 58.5% | 47.4% | 11.6% | 32.4% | < 0.001 | |
| Age-standardized | 31.7% | 21.4% | 15.2% | 24.1% | 27.4% | 27.5% | 27.9% | 45.1% | 32.3% | 0.6% | 1.9% | < 0.001 | |
| Age, yrs | |||||||||||||
| 20–39 | Crude | 16.5% | 6.6% | 3.1% | 8.2% | 8.8% | 11.9% | 9.3% | 15.2% | 11.2% | -5.3% | -32.1% | 0.618 |
| 40–59 | Crude | 30.4% | 28.4% | 18.5% | 29.5% | 32.8% | 36.7% | 35.6% | 48.7% | 35.0% | 4.6% | 15.1% | 0.037 |
| 60–79 | Crude | 33.7% | 40.2% | 27.7% | 41.0% | 42.3% | 48.9% | 52.4% | 61.5% | 57.8% | 24.1% | 71.5% | < 0.001 |
| Area | |||||||||||||
| Urban | |||||||||||||
| Crude | 33.7% | 34.9% | 25.9% | 37.3% | 41.6% | 51.6% | 54.5% | 64.2% | 52.6% | 18.9% | 56.1% | < 0.001 | |
| Age-standardized | 26.0% | 24.7% | 17.7% | 23.6% | 26.5% | 32.0% | 33.6% | 44.0% | 30.4% | 4.4% | 16.9% | < 0.001 | |
| Rural | |||||||||||||
| Crude | 25.9% | 24.9% | 15.8% | 26.5% | 29.6% | 33.7% | 34.8% | 45.5% | 38.1% | 12.2% | 47.1% | 0.014 | |
| Age-standardized | 22.6% | 16.9% | 9.8% | 19.4% | 20.4% | 23.6% | 21.7% | 28.9% | 25.1% | 2.5% | 11.1% | 0.014 | |
| Treatment | |||||||||||||
| All | |||||||||||||
| Crude | 19.2% | 18.4% | 14.4% | 23.8% | 27.2% | 32.4% | 36.1% | 46.8% | 39.2% | 20.0% | 104.2% | < 0.001 | |
| Age-standardized | 15.1% | 11.6% | 9.3% | 15.6% | 17.3% | 20.0% | 21.9% | 28.9% | 23.6% | 8.5% | 56.3% | < 0.001 | |
| Sex | |||||||||||||
| Male | |||||||||||||
| Crude | 14.6% | 17.3% | 12.4% | 19.1% | 22.0% | 27.6% | 31.3% | 41.0% | 36.1% | 21.5% | 147.3% | < 0.001 | |
| Age-standardized | 11.4% | 10.9% | 7.8% | 12.8% | 14.0% | 18.1% | 19.9% | 25.0% | 20.7% | 9.3% | 81.6% | < 0.001 | |
| Female | |||||||||||||
| Crude | 24.3% | 19.6% | 16.8% | 29.1% | 32.8% | 37.5% | 41.2% | 52.9% | 43.2% | 18.9% | 77.8% | < 0.001 | |
| Age-standardized | 20.9% | 12.3% | 11.6% | 18.6% | 21.8% | 21.4% | 24.2% | 35.3% | 28.6% | 7.7% | 36.8% | < 0.001 | |
| Age, yrs | |||||||||||||
| 20–39 | Crude | 9.2% | 2.8% | 3.1% | 5.2% | 5.6% | 6.9% | 8.0% | 10.3% | 8.9% | -0.3% | -3.3% | 0.775 |
| 40–59 | Crude | 20.0% | 15.5% | 12.1% | 21.3% | 25.4% | 28.0% | 29.2% | 42.1% | 30.1% | 10.1% | 50.5% | < 0.001 |
| 60–79 | Crude | 22.4% | 29.1% | 21.8% | 34.3% | 34.7% | 41.7% | 47.4% | 55.6% | 53.2% | 30.8% | 137.5% | < 0.001 |
| Area | |||||||||||||
| Urban | |||||||||||||
| Crude | 23.0% | 24.9% | 19.7% | 31.2% | 34.6% | 42.1% | 50.0% | 59.0% | 49.5% | 26.5% | 115.2% | < 0.001 | |
| Age-standardized | 17.8% | 16.2% | 13.6% | 18.1% | 21.1% | 24.7% | 30.9% | 38.8% | 27.9% | 10.1% | 56.7% | < 0.001 | |
| Rural | |||||||||||||
| Crude | 16.0% | 14.1% | 11.3% | 19.3% | 22.5% | 27.0% | 29.0% | 38.6% | 32.4% | 16.4% | 102.5% | < 0.001 | |
| Age-standardized | 13.1% | 8.7% | 7.0% | 13.9% | 14.9% | 17.3% | 17.6% | 22.9% | 20.8% | 7.7% | 58.8% | < 0.001 | |