Pragmatic application of a clinical prediction rule in primary care to identify patients with low back pain with a good prognosis following a brief spinal manipulation intervention

Table 4 Accuracy of two criteria rule relative to the five criteria rule for predicting response to manipulation

	Likely responder*	Likely non-responder*
Both criteria present	32	7
Both criteria not present	16	86
	Sensitivity = 0.67 (95% CI: 0.53, 0.78)	Specificity = 0.93 (95% CI: 0.85, 0.96)
Positive Likelihood Ratio = 8.9 (95% CI: 4.2, 18.6)
Negative Likelihood Ratio = 0.36 (95% CI: 0.24, 0.54)

* The reference standard was the categorization of the subject based on the original five criteria prediction rule.

ISSN: 2731-4553