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Table 3 Socio-demographic characteristics of men in different preconception risk categories

From: China’s community-based strategy of universal preconception care in rural areas at a population level using a novel risk classification system for stratifying couples´ preconception health status

   No risk factors A B C D X
Age ≤25 9.2% 10.2% 10.3% 9.1% 4.5%* -
  25–30 43.1% 44.5% 44.9% 45.5% 38.6%* -
  30–35 28.8% 27.6% 28.0% 28.1% 33.0%* -
  ≥35 18.9% 17.6% 16.8% 17.3% 23.9%* -
Area Rural area 92.6% 92.1% 90.1% 92.2% 85.7% -
Race Han 92.7% 91.3% 88.4% 92.3% 91.1% -
Education Secondary school or lower 69.3% 69.0% 63.1% 66.4% 61.9% -
  High school 20.0% 19.2% 20.1% 20.2% 16.9% -
  College or higher 10.6% 11.8% 16.8%* 13.4% 21.3%* -
  1. *:P value <0.05 compared with those men having no risk factors