Study group HR
Variable Total Number of cases Incidence per 100 person-years Adjusted Unadjusted
Group
Non-AH 1988 1220 95.7
AH 497 368 150.1 1.53 (1.36-1.72) 1.50 (1.34-1.69)
Sex
Male 1186 697 90.4 1 1
Female 1299 891 119.1 1.34 (1.21-1.48) 1.28 (1.16-1.41)
Age (years)
<20 493 356 151.9 1 1
20-40 1121 755 111.2 0.74 (0.65-0.85) 0.76 (0.67-0.86)
40-60 627 355 84.7 0.58 (0.50-0.68) 0.59 (0.51-0.69)
>60 244 122 65.2 0.46 (0.37-0.56) 0.47 (0.38-0.58)
Residential area
Urban 1259 803 103.8 1 1
Rural 1226 785 105.3 1.03 (0.93-1.13) 1.01 (0.92-1.11)
Socioeconomic status (percentile)
<30 (low) 242 150 92.1 1 1
30-70 (middle) 1029 649 102.8 1.19 (0.99-1.42) 1.11 (0.93-1.32)
>70 (high) 1214 789 108.8 1.33 (1.11-1.59) 1.16 (0.98-1.38)