Risk factor | Controls (n (%)) | Adenomas | Carcinomas | ||||||
---|---|---|---|---|---|---|---|---|---|
(n (%)) | OR (95% CI) | (n (%)) | OR (95% CI) | ||||||
Age ⩾65 years | 73 (31) | 65 (57) | 3.0 (1.9–4.8) | 119 (59) | 3.2 (2.2–4.8) | ||||
Male sex | 100 (42) | 65 (57) | 1.8 (1.2–2.9) | 126 (62) | 2.3 (1.6–3.4) | ||||
CRC family history | 22 (9) | 10 (9) | 0.9 (0.4–1.2) | 23 (11) | 1.3 (0.7–2.3) | ||||
Abdominal pain | 170 (72) | 73 (64) | 0.7 (0.4–1.1) | 95 (48) | 0.4 (0.2–0.5) | ||||
Blood in stools | 86 (36) | 57 (50) | 1.8 (1.1–2.8) | 130 (64) | 3.2 (2.2–4.7) | ||||
Constipation | 5 (2.1) | 2 (1.8) | 0.8 (0.2–4.3) | 9 (4.5) | 2.2 (0.7–6.6) | ||||
Smoking | 97 (41) | 66 (58) | 2.0 (1.3–3.1) | 101 (50) | 1.5 (1.0–2.1) | ||||
Alcohol | 208 (87) | 102 (90) | 1.2 (0.6–2.5) | 180 (89) | 1.2 (0.7–2.1) | ||||
Fat diet | 28 (12) | 22 (19) | 1.8 (0.9–3.3) | 33 (16) | 1.5 (0.8–2.5) | ||||
Anthranoid laxative use | 33 (14) | 16 (14) | 1.0 (0.5–1.9) | 29 (14) | 1.0 (0.6–1.8) | ||||
Other laxative use | 8 (3.4) | 4 (3.5) | 1.0 (0.3–3.5) | 7 (3.5) | 1.0 (0.4–2.9) | ||||
Endoscopic melanosis coli | 7 (2.9) | 5 (4.4) | 1.5 (0.5–4.9) | 8 (4.0) | 1.4 (0.5–3.8) | ||||
Microscopic melanosis coli | 28 (12) | 23 (20) | 1.9 (1.0–3.5) | 48 (24) | 2.3 (1.4–3.9) | ||||
Low grade microscopic melanosis coli | 16 (7) | 16 (14) | 2.3 (1.1–4.7) | 38 (19) | 3.2 (1.7–6.0) | ||||
High grade microscopic melanosis coli | 12 (5) | 7 (6) | 1.2 (0.5–3.2) | 10 (5) | 1.0 (0.4–2.3) |