Risk factorTotalNo cyst occurrenceCyst occurrence
n (%)n (%)n (%)
Gender
Male521 (48.4%)287 (49.2%)234 (47.4%)
Female556 (51.6%)296 (50.8%)260 (52.6%)
Smoking
Never416 (38.3%)211 (36.2%)205 (41.5%)
Former453 (42.1%)240 (41.2%)213 (43.1%)
Current208 (19.3%)132 (22.6%)76 (15.4%)
Diabetes
No993 (92.2%)552 (94.7%)441 (89.3%)
Yes84 (7.8%)31 (5.3%)53 (10.7%)