Hospital-acquired insomnia scale: A validity and reliability study

Table 1 Distribution of patients by sociodemographic characteristics (n = 221)

Characteristics	Variables	n	%
Sex	Famale	116	52
	Male	107	48
Age	18-30	16	7.2
	31-50	50	22.4
	51-70	105	47.1
	71 and above	52	23.3
Educational status	Illiterate	45	20.2
	Primary school	110	49.3
	Middle school	20	9
	High school and above	48	21.5
Social security	Yes	155	69.5
	No	68	30.5
Hospitalization	No	44	19.7
	Less than 1 wk	57	25.6
	1-2 wk	69	30.9
	2-3 wk	23	10.3
	1 mo and more	15	13.4
Sleep quality with 1 lowest 10 highest	1-2	21	9.4
	3-4	38	17.1
	5-6	49	22
	7-8	71	31.8
	9-10	44	19.8

Table 2 Cronbach's alpha, Kaiser-Meyer-Olkin values and Bartlett's test results for data sets

Tests		Test results
Kaiser-Meyer-Olkin sampling adequacy		0.663
Bartlett’s test of sphericity	χ2	3019.015
	Standard error	465
	P value	0.001

Table 3 Hospital-acquired insomnia scale exploratory factor analysis results

	Common load value	Faktors
		1	2	3	4	5
i31	0.781	0.869
i26	0.758	0.865
i32	0.713	0.843
i22	0.567	0.733
i29	0.554	0.729
i16	0.781		0.855
i15	0.727		0.815
i14	0.662		0.666	0.339
i7	0.485		0.647
i41	0.886			0.924
i42	0.758			0.835
i43	0.572			0.696
i11	0.704				0.783
i12	0.552				0.705
i10	0.666		0.392		0.680
i3	0.747					0.855
i2	0.604					0.774
i1	0.407					0.631
Eigenvalue (total = 11.925)		4.022	3.334	1.983	1.544	1.042
%Total explained variance = 66.250%		22.345	18.521	11.016	8.580	5.788

Table 4 Confirmatory factor analysis goodness of fit indices and normal values

Index	Normal value	Acceptable value	Measurement	Result
χ2/P Value	> 0.05	-	0.001	Perfect fit
χ2/SD (CMIN/DF)	< 2	< 5	1.874	Perfect fit
GFI	> 0.95	> 0.90	0.900	Acceptable fit
AGFI	> 0.95	> 0.85	0.861	Acceptable fit
CFI	>0.95	> 0.90	0.933	Acceptable fit
RMSEA	< 0.05	< 0.08	0.0.070	Acceptable fit
RMR	< 0.05	< 0.08	0.039	Perfect fit
SRMR	< 0.05	< 0.08	0.0600	Acceptable fit
NFI	> 0.95	> 0.80	0.869	Acceptable fit
TLI	0.95 < TLI < 1	0.90 < TLI < 0.94	0.917	Acceptable fit
IFI	> 0.90	-	0.934	Perfect fit
PGFI	> 0.89	> 0.50	0.648	Acceptable fit
PNFI	> 0.89	> 0.50	0.699	Acceptable fit

CMIN/DF: Chi-square fit statistic/degree of freedom; GFI: Goodness of fit index; AGFI: Adjusted goodness of fit index; CFI: Comparative fit index; RMSEA: Root mean square error of approximation; RMR: Root mean square residual; SRMR: Standardized root mean square residual; NFI: Normed fit index; TLI: Tucker–Lewis index; IFI: Incremental fit index; PGFI: Parsimony goodness of fit index; PNFI: Parsimony normed fixed index.

Table 5 Results of two-half confidence analysis

Two half	Cronbach alpha
Part 1	0.738
Part 2	0.606

Table 6 Mean score of the hospital-acquired insomnia scale and its sub-dimensions

	Average	SD	Min	Max
F1	1.06	0.32	1.00	5.00
F2	1.57	0.90	1.00	5.00
F3	1.12	0.46	1.00	4.00
F4	1.41	0.77	1.00	5.00
F5	1.08	0.27	1.00	3.00
Total hospital-acquired insomnia scale	1.25	0.35	1.00	3.06
Insomnia severity index	10.35	7.76	0	28

Table 7 Relationship between the hospital-acquired insomnia scale and its sub-dimensions and the insomnia severity index

	F1	F2	F3	F4	F5	HAIS
Insomnia severity index
r	-0.079	0.3781	0.2261	0.2081	-0.061	0.3341
P value	0.242	0.000	0.001	0.002	0.361	0.000
Total hospital-acquired insomnia scale
r	0.3031	0.8861	0.3431	0.7051	0.2811	1.000
P value	0.000	0.000	0.000	0.000	0.000	-

¹Correlation is significant at the 0.01 level (2-tailed).

HAIS: Hospital-acquired insomnia scale.