Development and validation of the psoriasis scale among the system of quality of life instruments for chronic diseases QLICD-PS (V2.0)

Table 4 Test–retest reliability of the quality of life instrument QLICD-PS (n = 122)

Domain/Facets	First measurement		Second measurement		Paired t test		Correlation
Domain/Facets	Average	Standard deviation	Average	Standard deviation	t	P	r	P
PHD	65.51	17.28	66.41	16.53	− 1.36	0.177	0.92	< 0.001
BPF	62.67	16.79	62.95	16.52	− .288	0.774	0.81	< 0.001
IND	78.56	27.03	78.48	26.46	0.070	0.944	0.91	< 0.001
EAD	51.59	25.35	55.23	24.62	− 2.725	0.008	0.84	< 0.001
PSD	55.00	15.81	54.83	17.11	0.182	0.856	0.84	< 0.001
COG	63.30	19.55	62.39	19.85	0.807	0.422	0.82	< 0.001
EMO	52.18	17.80	68.99	18.23	− 7.801	0.000	0.21	< 0.05
WIP	56.59	22.19	57.84	23.64	− 1.225	0.223	0.89	< 0.001
SOD	67.27	12.90	67.95	13.58	− 1.138	0.258	0.89	< 0.001
INC	72.42	15.00	73.48	15.02	− 1.136	0.191	0.84	< 0.001
SSS	66.66	17.27	67.80	16.42	− 1.680	0.096	0.91	< 0.001
SOR	60.45	23.00	59.89	23.77	0.432	0.667	0.83	< 0.001
SPD	59.55	14.82	57.92	17.61	1.811	0.073	0.85	< 0.001
SPS	69.32	15.60	63.32	19.66	4.352	0.000	0.69	< 0.001
TSE PSI	78.56 42.00	27.03 24.00	78.48 43.45	26.45 25.30	0.070 − 1.360	0.944 0.177	0.91 0.90	< 0.001 < 0.001
GM	61.88	12.35	62.31	12.99	− 1.019	0.311	0.94	< 0.001
TOT	61.14	11.30	60.91	12.91	0.524	0.601	0.94	< 0.001

ISSN: 1477-7525