Participants’ characteristics of the patients in each quintile
| Number of patients | Sex (M/F) | Age, median (IQR), (years) | AAS score, median (IQR) | BMI (kg/m2), median (IQR) | Symptom duration, median (IQR) (weeks) | |
| Quintile 1 (highest SES score) | 45 (22.5) | 28 (62)/17(38) | 50.0 (43.5–56.5) | 4.0 (4.0–5.5) | 25.5 (24.0–27.7) | 126 (60–356) |
| Quintile 2 | 37 (18.5) | 20 (54)/17 (46) | 53.0 (49.0–59.5) | 4.0 (4.0–5.0) | 25.4 (23.0–28.9) | 77 (43–206) |
| Quintile 3 | 38 (19.0) | 26 (68)/12 (32) | 45.5 (35.8–53.3) | 5.0 (4.0–8.0) | 25.2 (23.6–29.3) | 104 (33–299) |
| Quintile 4 | 41 (20.5) | 24 (59)/17(41) | 51.0 (34.5–56.0) | 5.0 (4.0–8.0) | 25.4 (22.8–28.1) | 66 (37–154) |
| Quintile 5 (lowest SES score) | 39 (19.5) | 23 (59)/16 (41) | 52.0 (32.0–59.0) | 5.0 (4.0–7.0) | 26.0 (23.8–30.0) | 68 (27–208) |
Data are presented as No. (%) unless otherwise specified.
AAS, Ankle Activity Score; BMI, body mass index; F, female; M, male; SES, socioeconomic status.