Table 1.
Description of the study population at baseline
| Variable | |
|---|---|
| Sex, n (%) | |
| Male | 135 (43.8) |
| Female | 173 (56.2) |
| Smoking habits, n (%) | |
| Smoker | 204 (66.2) |
| Never smoked | 79 (25.7) |
| Ex‐smoker (since > 6 months) | 25 (8.1) |
| Duration of HS, n (%) | |
| <5 years | 235 (76.3) |
| 5–<14 years | 54 (17.5) |
| ≥14 years | 19 (6.2) |
| Body mass index, n (%) | |
| <23 | 67 (21.8) |
| 23–<25 | 53 (17.2) |
| 25–<30 | 99 (32.1) |
| ≥30 | 89 (28.9) |
| Hurley stage, n (%) | |
| 1 | 90 (29.5) |
| 2 | 134 (43.9) |
| 3 | 81 (26.6) |
| HS‐PGA, n (%) | |
| Clear | 7 (2.3) |
| Minimal | 5 (1.6) |
| Mild | 72 (23.4) |
| Moderate | 176 (57.1) |
| Severe | 21 (6.8) |
| Very severe | 27 (8.8) |
| Localization of lesions, n (%) | |
| Face/neck | 20 (6.5) |
| Left axillae | 162 (52.6) |
| Right axillae | 157 (51.0) |
| Left breast | 55 (17.9) |
| Right breast | 56 (18.2) |
| Trunk | 73 (23.7) |
| Left groin | 156 (50.6) |
| Right groin | 153 (49.7) |
| Left gluteus | 87 (28.2) |
| Right gluteus | 84 (27.3) |
| Genital area | 89 (28.9) |
| Perineal area | 89 (28.9) |
| Comorbidities, n (%) | |
| Hypertension | 17 (5.5) |
| Dyslipidaemia | 10 (3.2) |
| Obesity | 35 (11.4) |
| Diabetes | 7 (2.3) |
| Crohn disease | 5 (1.6) |
| Age, years, median (IQR) | 32 (24–44) |
| Time from onset, years, median (IQR) | 8.3 (4.2–15.9) |
| Time from diagnosis, years, median (IQR) | 1.8 (0.9–4.7) |
| Number of flares in the last year, median (IQR) | 5 (3–12) |
| Number of inflammatory nodules, median (IQR) | 4 (2–6) |
| Number of abscesses, median (IQR) | 1(0–2) |
| Number of draining fistulas, median (IQR) | 1 (0–2) |
| HIDRAdisk Qol score at visit 1, median (IQR) | 73 (54.0–85.5) |
HS, hidradenitis suppurativa; HS‐PGA, Hidradenitis Suppurativa Physician’s Global Assessment scale; IQR, interquartile range; QoL, quality of life.