Shortening of the Burnout Assessment Tool (BAT)—from 23 to 12 items using content and Rasch analysis

BMC Public Health

Table 1 Summary fit statistics, subsample 1 (n = 800)

	Item residual		Person residual		Chi square		Unidimensionality
Analysis name	Mean	SD	Mean	SD	Value	p	PSI	Test % (95% CI)
BAT 23 items*	-0.15	2.91	-0.86	2.86	416.51	< 0.0001	0.95	20.9 (18.2;23.9)
BAT19	-0.12	2.55	-0.85	2.46	314.34	< 0.0001	0.94	15.8 (13.4;18.6)
BAT15a	-0.12	2.32	-0.80	2.26	192.35	0.0001	0.93	13.4 (11.2;16.4)
BAT15b	-0.19	2.25	-0.79	2.23	205.71	< 0.0001	0.93	13.8 (11.5;16.0)
BAT14	-0.10	2.21	-0.78	2.17	170.67	0.005	0.92	13.0 (10.8;15.6)
BAT13	-0.15	2.26	-0.80	2.18	156.73	0.008	0.91	12.1 (10.0;14.7)
BAT12	-0.19	2.32	-0.78	2.07	159.74	0.0009	0.91	13.0 (10.8;15.6)
BAT12 4 testlets	0.27	1.28	-0.51	1.14	45.06	0.14	0.82	4.4 (3.1;6.2)

^aThe BAT23 results are previously published in Hadžibajramović, E., W. Schaufeli, and H. De Witte, A Rasch analysis of the Burnout Assessment Tool (BAT). PLOS ONE, 2020. 15(11): p. e0242241

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