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Demographic characteristics of GCA patients and healthy individuals.
| Groups | Control n (%) | GCA n (%) | P |
| Sex | |||
| Male | 201 (68.4) | 159 (75.0) | 0.10 |
| Female | 93 (31.6) | 53 (25.0) | |
| Mean age in years (SD) | 59.1 (10.2) | 60.4 (8.4) | 0.09 |
| Smoking status | |||
| Ex- or current smoker | 103 (43.3) | 114 (58.2) | 0.0025 |
| Non-smoker | 135 (56.7) | 82 (41.8) | |
| Family history of UGIC | |||
| Positive | 9 (5.5) | 57 (30.6) | <0.0001 |
| Negative | 156 (94.5) | 129 (69.4) |
