Table 4

Female cohort: Age-adjusted association of HCC mortality rates with suspected risk factors

Status at study entryPerson-yearsNo. of HCCRR95% CI
HBsAg
 Positive19,0506137.219.1–72.5
 Negative162,31216
History of acute hepatitis
 Yes25,492346.13.9–9.6
 No155,87043
Family history of HCC
 Yes845972.31.0–4.9
 No172,90370
Occupation
 Peasant153,600732.50.9–6.9
 Nonpeasant27,7624
Smoking
 Yes627882.00.9–4.2
 No175,08469
Drinking alcohol (≥4 drinks/week)
 Yes24,47190.60.3–1.3
 No156,89168
Drinking tea (≥4×/week)
 Yes12,24510.20.1–1.3
 No169,11776
Drinking well water in 1980s
 Yes79,403280.70.5–1.2
 No101,95949
Corn as staple food in 1980s
 Yes452621.00.2–4.0
 No176,83675