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. 2022 May 11;19(8):2191–2199. doi: 10.1111/iwj.13829

TABLE 2.

Mean ± 1 SD, median, and quartiles of reactive hyperemia variables and Mann–Whitney U test results between groups

Reactive hyperemia variables (unit) Pressure injury developed prior to discharge P r
Yes (n = 2) No (n = 9)
Mean ± 1 SD Median (1st‐3rd quartile) Mean ± 1 SD Median (1st‐3rd quartile)
Baseline skin blood flow (perfusion unit)

27.40 ± 12.30

27.40 (23.05–31.75)

44.36 ± 32.05

35.75 (21.00–62.16)

.267 0.25
Peak skin blood flow (perfusion unit)

80.93 ± 63.87

80.93 (58.34–103.51)

161.50 ± 100.20

116.97 (85.41–226.53)

.200 0.33
Normalised peak skin blood flow (%)

300.00 ± 292.74

300.00 (196.50–403.50)

326.39 ± 166.35

339.50 (230.25–395.00)

.556 0
Perfusion area (perfusion unit)

2674.37 ± 2478.33

2674.37 (1789.15 3550.59)

5449.77 ± 4740.03

3313.66 (2191.09 9175.17)

.356 0.17