Table 1.

Characteristics of study population

Variable	Total (n = 251)	Mild and intermediate burns (n = 183)	Severe burns (n = 68)	P‐difference between subgroups*
Gender: Male, n(%)	155 (61.8%)	114 (62.3%)	42 (60.0%)	0.772
Age, mean (SD)	47.6 (17.0)	45.6 (17.1)	53.0 (15.6)	0.002
Age at burn, mean (SD)	42.0 (17.0)	40.2 (17.1)	46.9 (15.8)	0.004
%TBSA burned, mean (SD)	9.7 (12.3)	4.4 (4.1)	24.0 (15.5)	<0.001
%TBSA full‐thickness, mean (SD)†	3.7 (8.4)	0.8 (1.2)	11.8 (13.3)	<0.001
Length of hospital stay, mean (SD)	17.7 (22.1)	9.3 (10.3)	40.1 (28.8)	<0.001
Number of surgeries, mean (SD)	1.3 (2.0)	0.7 (0.7)	3.0 (2.9)	<0.001
Number of surgeries, n(%)
0	89 (35.5%)	83 (45.4%)	6 (8.8%)
1	114 (45.4%)	88 (48.1%)	26 (38.2%)
>1	48 (19.1%)	12 (6.5%)	36 (53.0%)
Reconstructive surgery, n(%)	29 (11.6%)	8 (4.3%)	21 (30.9%)	<0.001
Mechanical ventilation, n(%)	40 (15.9%)	14 (7.7%)	26 (38.2%)	<0.001
Time since burn (years), mean (SD)	5.6 (0.5)	5.4 (0.2)	6.1 (0.7)	<0.001
Worst scar location, n(%)⊥				0.027
Head/face/neck	32 (14.1%)	22 (13.7%)	10 (15.2%)
Trunk	27 (11.9%)	14 (8.7%)	13 (19.7%)
Arm	58 (25.6%)	39 (24.2%)	19 (28.8%)
Hand	40 (17.6%)	34 (21.1%)	6 (9.1%)
Legs	56 (24.7%)	39 (24.2%)	17 (25.8%)
Feet	14 (6.2%)	13 (8.1%)	1 (1.5%)
Etiology, n(%)¶				<0.001
Flame	142 (57.0%)	90 (49.5%)	52 (77.6%)
Scald	47 (18.9%)	40 (22.0%)	7 (10.5%)
Other	60 (24.1%)	52 (28.5%)	8 (11.9%)

Note. Severe burns: >20% total body surface area (TBSA) in adults ≤50 years old; >10% TBSA in adults >50 years old or TBSA full thickness > 5% (based on criteria American Burn Association1).

^* Mann‐Whitney U‐tests (continuous variables) and chi‐square tests (categorical variables) for comparison of the two subgroups of burn patients.

^† Three missing values.

^⊥ Twenty‐four missing values.

^¶ Two missing values.