Table 2. Children’s Dermatology Life Quality Index (CDLQI) domains and Cardiff Acne Disability Index (CADI) according to sex (mean ± SD).

CDLQI	Total sample	Boys	Girls	P value*
Symptoms and feelings (items 1 and 2)	1.49 ± 1.43	1.41 ± 1.43	1.57 ± 1.43	n.s.
Personal relationships (items 3 and 8)	0.55 ± 1.07	0.51 ± 1.12	0.57 ± 1.04	n.s.
Leisure (items 4, 5 and 6)	0.94 ± 1.72	0.77 ± 1.56	1.09 ± 1.85	n.s.
School or holiday (item 7)	0.40 ± 0.73	0.39 ± 0.73	0.41 ± 0.73	n.s.
Sleep (item 9)	0.23 ± 0.60	0.22 ± 0.63	0.25 ± 0.57	n.s.
Treatment (item10)	0.66 ± 0.79	0.63 ± 0.78	0.69 ± 0.80	n.s.
Total score	4.27 ± 5.13	3.93 ± 5.24	4.57 ± 5.04	n.s.
CADI
Feelings and symptoms (item 1)	0.78 ± 0.78	0.57 ± 0.73	0.96 ± 0.77	<0.0001
Personal relationships (item 2)	0.53 ± 0.78	0.43 ± 0.70	0.60 ± 0.83	n.s.
Avoidance of swimming (item 3)	0.31 ± 0.63	0.26 ± 0.62	0.36 ± 0.64	n.s.
Feelings about the appearance of skin (item 4)	0.94 ± 0.81	0.77 ± 0.82	1.10 ± 0.77	0.001
Perceived severity (item 5)	0.97 ± 0.75	0.87 ± 0.76	1.07 ± 0.73	0.045
Total score	3.53 ± 3.11	2.90 ± 3.00	4.07 ± 3.11	0.003

*t-test.