BMC Musculoskeletal Disorders

Table 3 Comparing number of days on sick leave, mental and physical health, and bodily pain using adaptive copers (AC) as a reference group

From: Using a psychosocial subgroup assignment to predict sickness absence in a working population with neck and back pain

	MPI-S subgroups
	ID					DYS
	n	Median^a	IR^b	p -value MW-test	Holm-Bonferroni	n	Median^a	IR^b	p -value MW-test	Holm-Bonferroni	p -value^cKW-test
Sickness absence
0-18 months	36	23.44	32.29	0.083	Not rejected	18	40.22	113.01	0.04	Not rejected	0.056
19-36 months	36	22.56	60.78	0.024	Rejected	16	30.23	125.54	0.014	Rejected	0.013
Mental Health
18 months	29	62.50	29.38	0.007	Rejected	14	43.75	35.94	0.001	Rejected	<0.001
36 months	28	66.88	38.13	<0.001	Rejected	13	41.25	40.63	0.002	Rejected	<0.001
Physcial Health
18 months	29	52.50	27.50	0.007	Rejected	14	28.13	22.50	<0.001	Rejected	<0.001
36 months	28	59.38	44.06	0.020	Rejected	13	25.00	40.63	0.001	Rejected	0.001
Bodily Pain
18 months	29	50.00	37.50	0.004	Rejected	14	37.50	50.00	<0.001	Rejected	<0.001
36 months	28	50.00	43.75	0.007	Rejected	13	25.00	37.50	<0.001	Rejected	<0.001

Interpersonally distressed (ID) and Dysfunctional (DYS).
^a Median Mann-Whitney U test. ^b IR = Interquartile Range. ^c Kruskal-Wallis p-value.
Significant result p < 0.05 using Mann-Whitney U test.
Significant result p < 0.05 using Kruskal-Wallis test.

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