Reliability and validity of the preparatory grief scale for use with hemodialysis patients

Table 1 General information of the research subjects, n (%)

Characteristic	n = 327
Gender
Male	198 (60.6)
Female	129 (39.4)
Age (years)	57.35 ± 12.78
Education level
Junior high	153 (46.8)
Senior high school	106 (32.4)
College	68 (20.8)
Working status
Unemployed	159 (48.6)
Emeritus/retired	96 (29.4)
Employed	72 (22.0)
Monthly household income (yuan)
1000-4999	194 (59.3)
> 4999	133 (40.7)
Medical care payment approach
Social medical insurance	249 (76.1)
Free medical care expenses	78 (23.9)
Religious beliefs
Buddhist beliefs	28 (8.6)
Christian beliefs	37 (11.3)
No beliefs	262 (80.1)

Table 2 Comparison of the fit indices of the not modified and modified models

Fit indices	χ2/df	SRMR	RMSEA	GFI	AGFI	IFI	CFI	TLI
Not modified	2.181	0.0592	0.0600	0.835	0.801	0.902	0.901	0.888
Modified	2.056	0.0479	0.0570	0.872	0.841	0.931	0.930	0.919
Reference value	< 3	< 0.05	< 0.08	> 0.9	> 0.9	> 0.9	> 0.9	> 0.9

SRMR: Standardized root mean square residual; RMSEA: Root mean square error of approximation.

Table 3 Parameter estimation results of confirmatory factor analysis of the preparatory grief in advanced cancer patient scale

Sub-scales	Item	Parameter significance estimation				Factor loading
		Unstd.	SE	t	P value	Std.
Sadness and anger	Item 3	1				0.772
	Item 4	1.002	0.068	14.778	a	0.764
	Item 5	1.032	0.069	14.943	a	0.773
	Item 6	0.812	0.072	11.351	a	0.614
	Item 7	0.916	0.068	13.413	a	0.710
	Item 8	1.015	0.067	15.199	a	0.783
	Item 9	0.764	0.063	12.092	a	0.647
	Item 10	0.871	0.073	12.004	a	0.644
	Item 12	0.714	0.062	11.513	a	0.620
	Item 19	0.86	0.069	12.412	a	0.663
	Item 20	0.846	0.064	13.272	a	0.701
Disease adjustment	Item 17	1				0.693
	Item 23	1.142	0.104	11.025	a	0.717
Somatic symptoms	Item 29	1				0.503
	Item 27	1.336	0.17	7.841	a	0.627
	Item 26	1.412	0.167	8.455	a	0.719
	Item 24	1.104	0.152	7.273	a	0.548
Religious comfort	Item 14	1				0.709
	Item 15	0.8	0.07	11.357	a	0.630
	Item 31	0.847	0.075	11.305	a	0.630
Perceived social support	Item 1	1				0.536
	Item 2	1.815	0.194	9.362	a	0.805
	Item 30	1.866	0.199	9.368	a	0.823
Wish	Item 21	1				0.844
	Item 22	0.995	0.054	18.345	a	0.884
Self-consciousness	Item 16	1				0.811
	Item 18	0.847	0.057	14.804	a	0.776

^aP < 0.001.

Table 4 Convergent validity of the preparatory grief in advanced cancer patient scale

Categories	CR	AVE	Categories	CR	AVE
Sadness and anger	0.914	0.493	Perceived social support	0.771	0.538
Disease adjustment	0.664	0.497	Wish	0.855	0.747
Somatic symptoms	0.694	0.366	Self-consciousness	0.773	0.63
Religious comfort	0.695	0.432

AVE: Average variance extracted; CR: Composite reliability.