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Explanatory variable
| |
Scar height =0 mm (n = 60)
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Scar height >0 to 1 mm (n = 62)
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Scar height >1 mm OR scar reconstructive surgery/steroids/laser (n = 64)
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Total (n = 186)
|
p value
|
Test
|
|---|
| | |
n
|
%a
|
n
|
%a
|
n
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%a
|
n
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%a
| | |
|---|
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Sex
|
Female
|
28
|
46.7
|
24
|
38.7
|
26
|
40.6
|
78
|
41.9
|
0.650
|
Pearson’s chi-square (df = 2)
|
|
Male
|
32
|
53.3
|
38
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61.3
|
38
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59.4
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108
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58.1
| | |
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Age (years)
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Median (IQR)
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8.20 (3.48–12.58)
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4.25 (1.70–9.15)
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3.80 (1.55–9.22)
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5.30 (1.90–10.50)
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0.015
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Kruskal-Wallis
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Time from injury to scar assessment (months)b
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Median (IQR)
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6.60 (2.70–21.68)
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13.10 (8.52–52.38)
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34.40 (10.32–68.00)
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13.25 (6.08–47.35)
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<0.0001
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Kruskal-Wallis
|
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Asthmac
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Yes
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8
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14.0
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3
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4.8
|
11
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17.2
|
22
|
12.0
|
0.088
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Pearson’s chi-square (df = 2)
|
|
Eczemad
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Yes
|
9
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15.8
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9
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14.5
|
5
|
7.8
|
23
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12.6
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0.355
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Pearson’s chi-square (df = 2)
|
|
Diabetes (type 1 or type 2)
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Yes
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0
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0.0
|
0
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0.0
|
0
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0.0
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0
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0.0
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N/A
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Pearson’s chi-square (df = 2)
|
|
Fitzpatrick skin typee
|
1–3
|
17
|
29.8
|
18
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29.5
|
22
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34.9
|
57
|
31.5
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0.768
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Pearson’s chi-square (df = 2)
|
|
4–6
|
40
|
70.2
|
43
|
70.5
|
41
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65.1
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124
|
68.5
| | |
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% TBSAf
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Median (IQR)
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3.00 (1.00–5.00)
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3.00 (1.00–7.25)
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4.00 (1.50–9.75)
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3.00 (1.00-7.00)
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0.018
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Kruskal-Wallis
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|
Level of surgical intervention (proxy for wound depth)
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Conservative
|
40
|
66.7
|
14
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22.6
|
13
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20.3
|
67
|
36.0
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<0.0001
|
Pearson’s chi-square (df = 2)
|
|
Split-thickness skin graft
|
20
|
33.3
|
48
|
77.4
|
51
|
79.7
|
119
|
64.0
| | |
|
Multiple surgical procedures (>1)
|
Yes
|
0
|
0.0
|
5
|
8.1
|
20
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31.3
|
25
|
13.4
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<0.0001
|
Pearson’s chi-square (df = 2)
|
|
Healed within 14 daysg
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Yes
|
33
|
63.5
|
19
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30.6
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3
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5.8
|
55
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34.4
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<0.0001
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Pearson chi-square (df = 2)
|
|
Wound complicationsh
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Yes
|
10
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17.2
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28
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45.9
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29
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50.0
|
67
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37.9
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<0.0001
|
Pearson’s chi-square (df = 2)
|
|
Length of stay (days)i
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Median (IQR)
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3.00 (0.00–8.00)
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6.50 (1.75–15.25)
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14.00 (5.00–25.50)
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7.00 (1.00–16.00)
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<0.0001
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Kruskal-Wallis
|
|
Worst scar locationj
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Head/neck
|
3
|
5.1
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2
|
3.2
|
3
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5.3
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8
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4.5
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0.850
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Pearson’s chi-square (df = 14)
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|
Chest/ abdomen
|
14
|
23.7
|
12
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19.4
|
7
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12.3
|
33
|
18.5
| | |
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Back/buttocks
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4
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6.8
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3
|
4.8
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2
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3.5
|
9
|
5.1
| | |
|
Arm
|
7
|
11.9
|
13
|
21.0
|
9
|
15.8
|
29
|
16.3
| | |
|
Hand
|
11
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18.6
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8
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12.9
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12
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21.1
|
31
|
17.4
| | |
|
Leg
|
15
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25.4
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17
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27.4
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16
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28.1
|
48
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27.0
| | |
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Foot
|
5
|
8.5
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6
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9.7
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8
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14.0
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19
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10.7
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Genitalia
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0
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0.0
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1
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1.6
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0
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0.0
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1
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0.6
| | |
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aColumn percentage
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bMissing data, n = 10
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cMissing data, n = 3
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dMissing data, n = 3
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eMissing data, n = 5
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fMissing data, n = 1
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gMissing data, n = 26
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hMissing data, n = 9
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iMissing data, n = 3
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jMissing data, n = 1
