Table 1 Distribution of selected host characteristics by case–control status in Chinese
From: Genetic polymorphisms of DNA double-strand break repair pathway genes and glioma susceptibility
Variables | Case (n = 384) | Control (n = 384) | P b |
|---|---|---|---|
Age, y (mean ± SD) | 62.4 ± 10.8 | 61.5 ± 12.1 | 0.277 |
Gender, no. (%) | Â | Â | Â |
   Male | 222 (57.8) | 217 (56.5) | 0.715 |
   Female | 162 (42.2) | 167 (43.5) |  |
Smoking status, no. (%) | Â | Â | Â |
   No | 228 (59.4) | 218 (56.8) | 0.465 |
   Yes | 156 (40.6) | 166 (43.2) |  |
Pack-years (mean ± SD)a | 32.7 ± 25.1 | 30.3 ± 27.7 | 0.209 |
Drinking status, no. (%) | Â | Â | Â |
   No | 288 (75.0) | 273 (71.1) | 0.222 |
   Yes | 96 (25.0) | 111 (28.9) |  |
WHO grade, no. (%) | Â | Â | Â |
   WHO I | 41 (10.7) |  |  |
   WHO II | 176 (45.8) |  |  |
   WHO III | 86 (22.4) |  |  |
   WHO IV | 81 (21.1) |  |  |