| Cases (n, %) | Controls (n, %) |
---|---|---|
Age in years2 (Mean ± S.D.) | 62.0 ± 13.7 | 63.4 ± 12.3 |
Years of formal education (Mean ± S.D.) | 3.5 ± 4.2 | 3.8 ± 4.8 |
Servings of fruit weekly (median, IQR) | 3.9, 6.8 | 7.8, 10.1 |
Servings of vegetable weekly (median, IQR) | 18.1, 16.0 | 20.6, 20.1 |
Birthplace | Â | Â |
   Singapore/Malaysia | 82 (65.1) | 130 (80.2) |
   China/other | 44 (34.9) | 32 (19.8) |
Exposure to environmental tobacco smoke at home | Â | Â |
   Daily | 46 (36.5) | 72 (44.4) |
   Weekly < daily | 16 (12.7) | 15 (9.3) |
   Less than weekly | 64 (50.8) | 75 (46.3) |
Histological subtype | Â | Â |
   Squamous/small cell carcinoma | 14 (11.9) |  |
   Adenocarcinoma | 85 (72.0) |  |
   Large cell undifferentiated/Not otherwise specified | 19 (16.1) |  |