BMC Musculoskeletal Disorders

Table 5 Discriminative analysis: Akaike information criterion (AIC), p -value and sensitivity/specificity of model variables for pain ratings

From: Inter- and intra-observer reliability of clinical movement-control tests for marines

	Model					Discriminative analysis
	Var. 1	Var. 2	Var. 3	Var. 4	Var. 5	AIC^a	p value	Sens/spec (%)
Back pain
prev. 6 month
Observer A	BKFO	DSLL				41.84	0.008	94/47
Observer B	BKFO	SB	SLKB+LL	DSLL	DLL-ALE	42.89	0.012	89/67
at present
Observer A	SB	SLKB+LL	DLL-L			36.68	0.046	33/92
Observer B	SB					40.49	0.140	0/100
LE pain
prev. 6 month
Observer A	BKFO	DLL-L				45.24	0.040	81/59
Observer B	SLKB+LL	DLL-L				45.73	0.050	44/88
at present
Observer A	SLKB+LL	DLL-L	DLL-ALE			36.10	0.038	50/92
Observer B	DLL-ALE					36.10	0.034	0/100

Abbreviations: Sens, sensitivity; spec, specificity; LE, lower extremity; BKFO, Bent knee fall out; SB, Standing bow; SLKB+LL, Single leg small knee bend + lunge-lean; DLL-L Double leg lift-lower; DLL-ALE, Double leg lift -alternate leg extension; DSLL, Double straight leg lower.
^a AIC, Akaike information criterion = 2k – 2L (k = number of variables; L = log likelihood).

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ISSN: 1471-2474

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