Table 1 Participants’ demographic characteristics and risk factors for GBS acquisition overall and by GBS carrier status
Participants’ characteristics/risk factors | Overall (n = 255) | GBS positive (n = 44) | GBS negative (n = 211) | P-Value |
|---|---|---|---|---|
Demographic characteristics | ||||
Mean age at enrolment (years, SD) | 68 (6) | 68 (5) | 69 (6) | 0.59 |
Minimum-maximum age (years) | 69–98 | 60–84 | 60–98 | Na |
Participants’ origin | 0.46* | |||
Swiss (%) | 205/239 (86%) | 38/42 (90%) | 167/197 (85%) | |
Other (%) | 34/239 (14%) | 4/42 (10%) | 30/197 (15%) | |
Not answered (%) | 16/255 (6%) | 2/44 (5%) | 14/255 (7%) | Na |
Medical history | ||||
No. of participants with diabetes (%) | 20/254 (8%) | 3/44 (7%) | 17/210 (8%) | > 0.99* |
No. of participants with liver disease (%) | 7/253 (3%) | 0/44 (0%) | 7/209 (3%) | 0.60* |
No. of participants with history of stroke (%) | 6/253 (2%) | 1/44 (2%) | 5/209 (2%) | > 0.99* |
No. of participants with bladder weakness (%) | 84/246 (34%) | 10/43 (23%) | 74/203 (36%) | 0.09 |
No. of participants with history of cancer (%) | 43/251 (17%) | 9/44 (20%) | 34/207 (16%) | 0.51 |
No. of participants still receiving cancer treatment (%) | 17/39 (44%) | 4/9 (44%) | 13/30 (43%) | > 0.99* |
Menstruation | ||||
Mean age of first menstruation (years, SD) | 14 (2) | 14 (2) | 14 (2) | 0.97 |
Not answered | 14/255 | 1/44 | 13/211 | Na |
Mean age of menopause (years, SD) | 49 (7) | 48 (8) | 49 (7) | 0.69 |
Not answered | 25/255 | 2/44 | 23/211 | Na |
Sexual activity | ||||
No. of sexual partners during life | 0.73§/0.80° | |||
1 or less (%) | 77/247 (31%) | 13/42 (31%) | 64/205 (31%) | 0.97 |
2 or 3 (%) | 80/247 (32%) | 14/42 (33%) | 66/205 (32%) | 0.88 |
3 or 4 (%) | 42/247 (17%) | 5/42 (12%) | 37/205 (18%) | 0.33 |
5 or more (%) | 48/247 (20%) | 10/42 (24%) | 38/205 (19%) | 0.43 |
Not answered (%) | 8/255 (3%) | 2/44 (4%) | 6/211 (3%) | Na |
No. of participants with a new sexual partner in the last few months before enrolment | 11/255 (4%) | 1/44 (2%) | 10/211 (5%) | 0.69* |
No. of participants’ sexual encounters in the 6 months before enrolment | 0.98§*/0.65° | |||
1 or less (%) | 141/235 (60%) | 24/41 (59%) | 117/194 (60%) | 0.83 |
2 or 3 (%) | 15/235 (6%) | 2/41 (4%) | 13/194 (7%) | > 0.99* |
3 or 4 (%) | 18/235 (8%) | 3/41 (7%) | 15/194 (8%) | > 0.99* |
At least once per month (%) | 31/235 (13%) | 6/41 (15%) | 25/194 (13%) | 0.76 |
At least once per week (%) | 30/235 (13%) | 6/41 (15%) | 24/194 (12%) | 0.69 |
Not answered (%) | 20/255 (8%) | 3/44 (7%) | 17/211 (8%) | Na |