Baseline indoor adherence low (n=23) | Baseline indoor adherence high (n=8) | All participants (n=31) | |||||||
Baseline | 1 month | 12 months | Baseline | 1 month | 12 months | Baseline | 1 month | 12 months | |
Adherence | |||||||||
Overall | 65 (56–72) | 77 (60–89) p=0.002* r=0.66‡ | 87 (60–93) p<0.001* r=0.74 | 96 (93–97) | 94 (91–96) p=0.306 r=0.36 | 95 (79–97) p=0.203 r=0.45 | 71 (60–90) | 83 (67–94) p=0.006* r=0.49 | 90 (69–95) p=0.003* r=0.54 |
Indoor | 48 (21–63) | 71 (50–83) p=0.001* r=0.74 | 77 (40–91) p<0.001* r=0.78 | 94 (91–95) | 93 (89–94) p=0.268 r=0.41 | 93 (93–96) p=0.496 r=0.26 | 57 (34–87) | 77 (52–93) p=0.002* r=0.62 | 84 (55–93) p=0.001* r=0.65 |
Outdoor | 94 (85–98) | 98 (92–100) p=0.135 r=0.34 | 99 (94–100) p=0.028 r=0.52 | 99 (99–100) | 100 (100–100) p=0.034* r=0.80 | 100 (100–100) p=0.034* r=0.80 | 96 (86–99) | 100 (100–100) p=0.059 r=0.37 | 100 (100–100) p=0.010* r=0.51 |
Wearing time indoor and regular footwear | |||||||||
Overall | 8.6 (4.9–9.8) | 9.3 (7.4–12.6) p=0.001* r=0.68 | 12.0 (8.1–14.2) p=002* r=0.75 | 14.7 (14.2–15.4) | 14.6 (13.1–15.1) p=0.309 r=0.39 | 17.9 (10.5–15.4) p=0.735 r=0.13 | 9.4 (6.5–12.2) | 11.5 (8.2–4.4) p=0.004* r=0.54 | 12.9 (8.7–15.1) p=0.005* r=0.57 |
Wearing time indoor footwear relative to total wearing time | |||||||||
Indoor footwear | NA† | 4.7 (2.9–7.1) | 5.7 (2.0–7.1) p=0.796 r=0.07 | NA | 10.3 (6.5–11.9) | 3.9 (3.5–10.4) p=0.173 r=0.56 | NA | 5.7 (2.9–7.8) | 5.6 (2.6–7.3) p=0.548 r=0.13 |
Regular footwear | 8.6 (4.9–9.8) | 4.5 (3.3–6.6) | 5.4 (3.1–9.0) p=0.796 r=0.07 | 14.7 (14.2–15.4) | 4.7 (2.7–8.2) | 5.7 (3.2–11.9) p=0.173 r=0.56 | 9.4 (6.5–12.2) | 4.6 (3.2–7.4) | 5.6 (3.3–10.7) p=0.249 r=0.25 |
Data are expressed as median (IQR).
*Significantly different between baseline and follow-up (Bonferroni-corrected level of significance: p<0.025 (0.05/2)).
†NA=not applicable; because the indoor footwear was provided only after baseline measurement. Please note that values are median; hours of indoor and regular footwear cannot be added up.
‡r=Wilcoxon effect size