General comparisons and correlation between single variables and quality of life domains for alopecia patients with scarring and non-scarring subtypes, quality of life by age, and pairwise comparison by age*.

Table 1: General comparisons and correlation between single variables and quality of life domains for alopecia patients with scarring and non-scarring subtypes, quality of life by age, and pairwise comparison by age^*.

QOL comparing alopecia and non-alopecia patients
		Alopecia group		Control group
		Mean	Std. Dev	Mean	Std. Dev
Symptoms	Itching	37.43	33.7	4.2	9.2
	Burning/Stinging	13.01	23.4	0	0
	Hurting	14.47	25.1	0	0
	Irritation	29.50	30.6	0.8	3.7
Emotion	Persistence/Reoccurrence of hair loss	65.35	35.4	5.8	12.4
	Worry	81.12	30.6	1.7	5.1
	Appearance	78.65	29.5	4.2	12.0
	Frustration	79.09	31.7	4.2	12.0
	Embarrassment	74.85	31.9	2.6	11.5
	Annoyance	79.35	30.6	4.4	12.2
	Depression	65.19	34.8	0	0
Function	Interactions with others	54.53	35.6	0.8	3.8
	Desire to be with people	47.51	38.0	0.8	3.7
	Show affection	37.28	38.8	0	0
	Daily activities	44.10	39.4	4.2	11.9
	Work or enjoyment	41.82	40.0	0	0
Global		52.7	40.6	2.1	8.0
QOL comparing scarring and non-scarring alopecia
	Scarring subgroup	Non-scarring subgroup		P-value
Symptoms	21.9	28.7		0.038
Emotions	77.5	66.6		< 0.0001
Functions	49.0	32.8		< 0.0001
Global	54.7	46.5		0.0002
QOL comparing current status of therapy
	Yes	No		P-value
Symptoms	24.0	21.3		0.46
Emotions	75.1	73.2		0.54
Functions	45.0	45.3		0.95
Global	52.9	51.4		0.55
QoL comparing age groups
	18 - 30	31 - 45	46 - 60	> 60	P-value
Symptoms	17.6	23.7	22.9	29.7	0.24
Emotions	73.8	85.3	74.8	62.6	< 0.0001
Functions	33.3	52.7	44.9	43.1	0.047
Global	47.1	59.8	52.5	48.2	0.0015
Pairwise comparison between subtype and age group
QOL Scale	Age group	Age group		P-Value
Emotions	31 - 45	45 - 65		0.0047
	31 - 45	> 65		< 0.0001
	46 - 65	> 65		0.0018
Functions	18 - 30	31 - 45		0.029
Global	18 - 30	31 - 45		0.01
	31 - 45	46 - 65		0.025
	31 - 45	> 65		0.004

^*A greater score indicates greater QoL impairment.