Table 1 Comparison of the general characteristics between primary liver cancer cases and controls1.
Characteristics | PLC (n = 644) | Controls (n = 644) | P |
|---|---|---|---|
Age (years) | 54.0 (46.0, 62.0) | 54.0 (46.0, 63.0) | 0.734* |
Male, n (%) | 559 (86.8) | 559 (86.8) | 1.000 |
BMI (kg/m2) | 22.6 (20.7, 24.8) | 23.1 (21.2, 25.2) | 0.002* |
Physical activity (MET· h per day) | 28.9 (25.0, 36.4) | 35.7 (32.1, 39.6) | <0.001* |
Education level, n (%) | <0.001* | ||
Primary school or below | 155 (24.1) | 74 (11.5) | |
Secondary school | 194 (30.1) | 187 (29.0) | |
High school or above | 295 (45.8) | 383 (59.5) | |
Household income (yuan/month), n (%) | <0.004* | ||
≤2,000 | 230 (35.7) | 254 (39.4) | |
2,000–4,000 | 239 (37.1) | 249 (38.7) | |
4,000–6,000 | 67 (10.4) | 69 (10.7) | |
>6,000 | 81 (12.6) | 65 (10.1) | |
Other | 27 (4.2) | 7 (1.1) | |
Working strength, n (%) | 0.001* | ||
Light | 246 (38.2) | 343 (53.3) | |
Moderate | 155 (24.1) | 86 (13.4) | |
Heavy | 177 (27.5) | 158 (24.5) | |
Other | 66 (10.2) | 57 (8.9) | |
HBV infection, n (%) | 523 (81.2) | not assessed | — |
Smoking, n (%) | 345 (53.6) | 283 (43.9) | <0.001# |
Alcohol user, n (%) | 208 (32.3) | 125(19.4) | <0.001# |
Tea Drinker, n (%) | 353 (54.8) | 398 (61.8) | 0.013# |
Energy intake (kcal/d)2 | 1523 (1224, 1865) | 1566 (1255, 1938) | 0.004* |
Total choline (mg/d)3 | 257 (208, 313) | 288 (243, 343) | <0.001* |
Free choline (mg/d)3 | 42 (33, 52) | 50 (41, 61) | <0.001* |
Phosphatidylcholine (mg/d)3 | 158 (122, 200) | 178 (140, 220) | <0.001* |
Glycerophosphocholine (mg/d)3 | 26 (21, 32) | 28 (23, 34) | <0.001* |
Phosphocholine (mg/d)3 | 11.0 (7.8, 15.9) | 14.8 (11.0, 20.2) | <0.001* |
Sphingomyelin (mg/d)3 | 13.0 (9.5, 16.9) | 13.9 (11.0, 17.3) | 0.001* |
Betaine (mg/d)3 | 77 (48, 119) | 93 (63, 130) | <0.001* |
Methionine (mg/d)3 | 1957 (1713, 2288) | 1867 (1676, 2068) | <0.001* |
Folate (μg/d)3 | 339 (292, 398) | 335 (297, 377) | 0.497* |
