Table 1.
Baseline foot skin temperature*
| Warmer foot (°C) | Colder foot (°C) | P‐value | Mean difference† | ||
|---|---|---|---|---|---|
| All locations | Mean (SD) | 29·9 (1·17) | 29·2 (0·92) | <0·001 | 0·65 (0·40) |
| Range | 25·7–32·2 | 26·3–32·9 | 0·40–0·90 | ||
| Hallux | Mean (SD) | 29·1 (3·02) | 27·8 (2·61) | <0·001 | 1·10 (0·62) |
| Range | 24·0–34·0 | 23·1–32·9 | 0·75–1·65 | ||
| MH1 | Mean (SD) | 29·6 (2·05) | 28·9 (2·06) | 0·001 | 0·60 (0·56) |
| Range | 26·2–32·6 | 24·8–32·2 | 0·49–0·91 | ||
| MH3 | Mean (SD) | 29·7 (2·12) | 29·3 (2·08) | 0·121 | 0·50 (0·52) |
| Range | 26·2–33·2 | 25·8–32·0 | 0·22–0·78 | ||
| MH5 | Mean (SD) | 29·4 (2·16) | 28·8 (2·07) | 0·007 | 0·55 (0·42) |
| Range | 26·2–32·8 | 25·2–32·6 | 0·28–0·92 | ||
| Midfoot | Mean (SD) | 30·8 (1·58) | 30·1 (1·58) | <0·001 | 0·45 (0·40) |
| Range | 28·2–33·2 | 27·4–33·0 | 0·19–0·91 | ||
| Heel | Mean (SD) | 30·0 (2·50) | 29·3 (2·26) | 0·013 | 0·70 (0·72) |
| Range | 25·2–34·2 | 25·4–33·5 | 0·57–1·07 |
MH, metatarsal head; SD, standard deviation.
*
Values are mean (standard deviation) in °C or as indicated.
†
At baseline, the left‐to‐right temperature difference was first calculated at an individual level (i.e. difference between warmer and older foot), after which the mean difference was calculated over these individual outcomes; the foot with a higher temperature was labelled ‘warmer foot’, and differences were calculated as ‘warmer minus colder’, hence always greater than zero. This calculation was performed per location and mean left‐to‐right difference.