Table 2 Prevalence of high serum gamma-glutamyltransferase levels across general characteristics
Variable | Serum GGT* | P-value§ | |
|---|---|---|---|
Normal level group | High level group† | ||
N (%‡) | N (%‡) | ||
Total | 1,470 (80.0) | 339 (20.0) | |
Age (years) | |||
20-39 | 974 (83.4) | 176 (16.6) | <0.001 |
40-49 | 496 (73.6) | 163 (26.4) | |
BMI (kg/m2) | |||
Underweight (<18.5) | 158 (88.8) | 24 (11.2) | <0.001 |
Normal (18.5–22.9) | 1,113 (84.5) | 194 (15.5) | |
Overweight (≥23.0) | 197 (57.5) | 120 (42.5) | |
Alcohol consumption (glasses/week) | |||
≤2.5 | 1,029 (83.2) | 188 (16.8) | <0.001 |
>2.5 | 441 (73.6) | 151 (26.4) | |
Smoking status | |||
Non-smoker | 1,271 (82.1) | 261 (17.9) | <0.001 |
Ex-smoker | 112 (81.6) | 24 (18.4) | |
Current smoker | 87 (59.6) | 54 (40.4) | |
Sleep duration (hours/day) | |||
≤5 | 114 (74.3) | 37 (25.7) | 0.249 |
6–8 | 1,251 (80.6) | 276 (19.4) | |
≥9 | 105 (79.5) | 26 (20.5) | |
Regular walking | |||
Yes | 553 (83.2) | 105 (16.8) | 0.030 |
No | 916 (78.0) | 234 (22.0) | |
Coffee intake (cups/day) | |||
<1 | 405 (79.3) | 99 (20.7) | 0.471 |
≥1 | 687 (81.3) | 153 (18.7) | |