Assessment of patients’ self-perceived intensive care unit discomforts: Validation of the 18-item version of the IPREA

Table 2 Dimensions’ characteristics of the 18-item IPREA

Item	Label	M ± SD ^a	Floor effect %	Ceiling effect %	Cronbach’s alpha		INFIT
Item	Label	M ± SD ^a	18i version	18i version	18i version	16i version	18i version	16i version
1	Noise	29.58 ± 31.73	40.64	4.33	0.784	0.757	0.96	0.93
2	Excess of light	18.91 ± 27.93	58.25	2.31	0.785	0.759	0.95	0.92
3	Different bed	24.81 ± 30.75	48.69	3.72	0.790	0.765	1.04	1.02
4	Sleep deprivation	38.5 ± 33.97	32.8	5.63	0.782	0.755	0.92	0.9
5	Thirst	31 ± 35.04	45.67	7.24	0.794	0.773	1.14	1.15
6	Hunger	13.54 ± 26	71.33	2.62	0.792	0.769	1.05	1.05
7	Feeling of cold	18.88 ± 28.34	60.36	2.31	0.796	0.773	1.16	1.14
8	Feeling of heat	14.29 ± 26.59	70.32	1.91	0.790	0.767	1.03	1.04
9	Pain	29.75 ± 29.49	36.22	2.31	0.790	0.767	1.05	1.05
10	Perf. lines/devices	33.36 ± 31.75	34.61	4.43	0.785	0.761	0.98	0.98
11	Intimacy	14.15 ± 24.95	66.6	1.71	0.787	0.761	0.94	0.93
12	Anxiety	27.05 ± 31.66	46.78	3.82	0.782	0.760	0.92	0.97
13	Isolation	13.19 ± 24.2	68.91	1.21	0.784	0.759	0.88	0.89
14	Visiting hours	9.64 ± 21.71	77.77	1.41	0.793	0.770	1.03	1.02
15	Phone	14.1 ± 28.37	73.74	4.02	0.794	0.771	1.12	1.11
16	Information	20.05 ± 28.74	57.04	2.41	0.788	0.764	1.01	1.01
17	Breathing	28.42 ± 30.94	42.25	3.72	0.793		1.1
18	Mood disorders	14.36 ± 25.73	68.21	1.91	0.781		0.85
	16-item total					0.776		1.01
	18-item total^a	21.87 ± 13.75	1.1	0	0.798		1.01

M ± SD mean ± standard deviation; m (IQR) median (interquartile range); INFIT Rasch statistics
^ascores ranging from 0 to 100; the higher the score, the higher the discomfort
Italic values: results of 16-item IPREA on the present sample

ISSN: 1477-7525