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Subjects positive for serum R249S mutation by season [n/total (%)].
| Period | HBsAg negativea | HBsAg positive | OR (95% CI) | |||
|---|---|---|---|---|---|---|
| October–July | 58/236 (25) | 106/237 (45) | 2.49 (1.68, 3.69)b | |||
| October–March (higher AFB1 exposure) | 45/134 (34) | 43/134 (32) | 0.94 (0.56, 1.57) | |||
| April–July (lower AFB1 exposure) | 13/102 (13) | 63/103 (61) | 10.9 (5.35, 22.34) | |||
| ORs are adjusted for age and sex. aUsed as reference category for OR determination. bAdjusted for seasonality. | ||||||
