Table 4.

Distribution of potential risk factors in the control group, stratified by sex

Risk factor	Controls (n = 23)	Women (n = 15)	Men (n = 8)
Vitamin D insufficiency	21/23 (91.3 %)	13/15 (86.7 %)	8/8 (100.0 %)
Family history	1/22 (4.5 %)	–	1/8 (13.3 %)
Nicotine abuse	3/22 (13.6 %)	3/14 (22.4 %)	–
PPI medication	6/22 (27.3 %)	6/14 (42.9 %)	–
Cortisone therapy	1/22 (4.5 %)	–	1/8 (13.3 %)
Immunosuppression	1/22 (4.5 %)	1/14 (14.9 %)	–
Alcohol abuse	2/22 (9.1 %)	2/14 (10.4 %)	–
Type 2 diabetes	1/22 (4.5 %)	1/14 (6.0 %)	–
Chemotherapy	3/22 (13.6 %)	3/14 (6.0 %)	–
Lactose intolerance	1/22 (4.5 %)	–	1/8 (13.3 %)
Anorexia nervosa	3/23 (13.0 %)	3/15 (20.0 %)	–