Table 1.

Outcomes

	70×20	70×30	80×20	80×30	90×20	P Value
Scar Data
Contracted scars, day 28, No. (%)	0 (0%)	1 (25%)	2 (50%)	3 (75%)	4 (100%)	.012
Mean (SD) scar area, day 28, cm2	8.10 (1.26)	7.83 (.85)	6.56 (1.20)	4.86 (2.01)	4.82 (1.10)	.007
Mean (SD) scar depth, mm	0.5 (0.4)	0.8 (0.8)	1.8 (1.4)	4.8 (2.7)	4.8 (2.5)	0.005
Mean (SD) depth of injury, mm
Collagen, 1 hr	0.25 (0.20)*	0.09 (0.10)	0.19 (0.09)	0.38 (0.19)	0.64 (0.14)	0.001
Endothelial, 1hr	0.89 (0.15)	0.46 (0.23)	0.91 (0.48)	1.51 (0.40)	2.26 (0.45)	<.001
Follicular, 1 hr	1.28 (0.10)	0.82 (0.66)	1.11 (0.30)	1.24 (0.11)	1.53 (0.12)	0.128
Interstitial, 1 hr	0.82 (0.44)	0.52 (0.32)	0.79 (0.10)	1.26 (0.28)	1.12 (0.46)	0.061
Collagen, 4 hr	0.20 (0.00)	0.33 (0.10)	0.34 (0.17)	0.41 (0.08)	0.51 (0.20)	0.048
Endothelial, 4 hr	0.89 (0.28)	1.31 (0.36)	1.21 (0.64)	1.84 (0.29)	1.85 (0.57)	0.037
Follicular, 4 hr	1.10 (0.33)	0.95 (0.43)	1.13 (0.25)	1.19 (0.41)	1.35 (0.33)	0.632
Interstitial, 4 hr	0.99 (0.37)	0.75 (0.32)	0.90 (0.25)	1.07 (0.23)	1.18 (0.15)	0.264
Collagen, 24 hr	0.16 (0.05)	0.22 (0.10)	0.26 (0.14)	0.25 (0.18)	0.38 (0.19)	0.351
Endothelial, 24 hr	0.86 (0.27)	0.98 (0.42)	1.48 (0.85)	2.08 (0.40)	1.84 (0.42)	0.018
Follicular, 24 hr	1.01 (0.42)	1.49 (0.29)	1.31 (0.88)	1.79 (0.20)	1.80 (0.13)	0.142
Interstitial, 24 hr	0.90 (0.34)	0.93 (0.49)	1.54 (0.93)	1.49 (0.31)	1.59 (0.45)	0.225
Collagen, 48 hr	0.38 (0.13)	0.32 (0.14)	0.39 (0.16)	0.42 (0.16)	0.33 (0.15)	0.053
Endothelial, 48 hr	0.78 (0.07)	1.12 (0.30)	1.21 (0.77)	2.01 (0.31)	2.10 (0.58)	0.005
Follicular, 48 hr	1.32 (0.54)	1.58 (0.29)	1.41 (1.00)	1.73 (0.16)	1.59 (0.17)	0.830
Interstitial, 48 hr	0.96 (0.08)	0.98 (0.14)	1.04 (0.76)	1.46 (0.21)	1.54 (0.30)	0.129
Reepithelialization
Day 7 histology, Mean (SD)	55.0 (40.8)	17.5 (21.8)	25.0 (50.0)	0 (0)	0 (0)	0.116
Percent healed, day 10	100%	50%	50%	0%	0%	0.24
Percent healed, day 14	100	100	50	50	50	0.10
Percent healed, day 21	100	100	100	100	100	1.00

^*Total dermal thickness was 2.5±0.5 mm.