Health-related quality of life in Iranian adolescents: a psychometric evaluation of the self-report form of the PedsQL 4.0 and an investigation of gender and age differences

Table 2 Descriptive statistics of the PedsQL 4.0 items (n = 326)

	Mean	SD	Median	Skewness	Kurtosis
Physical functioning
Item 1	87.08	23.04	100	− 1.72	2.18
Item 2	83.05	25.33	100	− 1.40	1.11
Item 3	87.35	23.15	100	− 1.70	1.79
Item 4	79.31	27.37	100	− 1.06	0.05
Item 5	96.70	12.96	100	− 4.71	24.93
Item 6	88.20	21.63	100	− 1.80	2.44
Item 7	88.81	21.55	100	− 2.09	4.11
Item 8	86.92	22.70	100	− 1.76	2.59
Emotional functioning
Item 1	84.60	23.25	100	− 1.35	0.96
Item 2	79.38	26.90	100	− 1.01	− 0.10
Item 3	79.49	27.29	100	− 1.11	0.24
Item 4	85.63	25.97	100	− 1.85	2.56
Item 5	75.40	29.31	100	− .84	− 0.43
Social functioning
Item 1	90.95	18.04	100	− 2.10	3.82
Item 2	93.71	16.25	100	− 3.35	13.35
Item 3	89.23	20.68	100	− 2.02	3.68
Item 4	93.19	18.06	100	− 3.22	10.97
Item 5	91.13	19.88	100	− 2.59	6.90
School functioning
Item 1	83.93	23.09	100	− 1.44	1.75
Item 2	79.09	25.59	75	− 1.17	0.85
Item 3	82.38	25.77	100	− 1.42	1.28
Item 4	86.81	22.38	100	− 1.81	2.92
Item 5	82.04	25.36	100	− 1.38	1.33

ISSN: 1477-7525