TABLE 1.

Comparison between Laslett M et al⁵¹ and van der Wurff et al²⁰ studies of the validity of multiples of positive pain provocation SIJ tests.

	Number of positive provocation SIJ tests
	1 or more		2 or more		3 or more		4 or more		5 or more
Diagnostic accuracy statistic	ML	PvW	ML	PvW	ML	PvW	ML	PvW	ML	PvW
Sensitivity %	100	100	93	93	91	85	60	26	27	0
Specificity %	44	42	66	58	78	79	81	82	88	100
Positive LR	1.8	1.7	2.7	2.2	4.3	4.0	3.2	1.4	2.1	0
Negative LR	0.0	0.0	0.10	0.13	0.08	0.19	0.49	0.91	0.84	1.00

Notes:

1. LR = likelihood ratio, ML = Laslett M et al 2005, PvW = van der Wurf et al 2006
2. The shaded cells represent the optimal number of positive SIJ provocation tests producing the highest positive likelihood ratio, i.e., 3 or more.
3. The tests included in this study are distraction, compression, thigh thrust, Gaenslen's test, sacral thrust, and Patrick's FABER test.