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Table 1 Demographic information of the subjects

From: The relationship between self-rated health and objective health status: a population-based study

  n (female/male) Mean age (SD) p- value*
Subjects in all five cities  
Total 16074 (8388/7686) 42.6 (15.2)  
SRH    
very good 1770 (845/925) 34.7 (12.7) <0.001
good 7581 (3773/3808) 40.1 (14.3)  
fair 5803 (3233/2570) 46.0 (15.0)  
bad 862 (506/356) 55.0 (14.6)  
very bad 58 (31/27) 53.8 (16.2)  
Subjects in Shanghai who have completed the blood sampling  
Total 3151 (1749/1402) 47.7 (14.1)  
SRH    
very good 164 (74/90) 41.5 (13.6) <0.001
good 1347 (694/653) 44.6 (14.0)  
fair 1492 (890/602) 50.3 (13.2)  
bad 141 (88/53) 58.0 (13.0)  
very bad 7 (3/4) 47.6 (16.5)  
  1. * p-values for mean ages.