Table 2.

Overall Rasch model fit statistics and reliability of SAQ domains^a

Overall fit statistics	SAQ domains
	Teamwork climate	Safety climate	Job satisfaction	Stress recognition	Perceptions of ward management	Perceptions of hospital management	Working conditions
Items
Fit residual (mean)b	0.46	−0.03	−0.44	0.32	0.31	0.15	−0.14
Fit residual (SD)c	1.65	0.86	2.10	1.49	3.92	4.02	1.17
Persons
Fit residual (mean)b	−0.58	−0.61	−0.52	−0.50	−0.64	−0.98	−0.79
Fit residual (SD)c	1.37	1.40	1.11	1.13	1.39	1.99	1.37
Total item-trait interaction
Total item χ 2	70.88	40.35	59.16	41.37	164.61	153.20	14.17
df	36	42	30	24	36	36	15
p-value	0.00	0.54	0.00	0.02	0.00	0.00	0.51
Person separation indexd	0.71	0.74	0.80	0.73	0.66	0.67	0.61

SD standard deviation, df degrees of freedom

^aAs analysed using RUMM2030 (Rumm Laboratory Pty Ltd., Perth) for Windows

^bShould be close to 0 [18]

^cShould be close to 1 [18]

^dRasch based reliability statistic (analogous to Cronbach’s alpha)