. 2013 Jul 13;23(1):103–117. doi: 10.1007/s11136-013-0442-5

Table 8.

Summary of results from minimally important difference analyses

	Bodily pain subscale
	Study A(n = 234)	Study B(n = 190)
Half of the standard deviation of change	15	11
Standard error of measurement	10.4	7.2
Effect size of change	1.43	0.99
ROC curves (Farrar et al. method)	16–21^a	10^b
ROC curves (alternate method)	21	9
Anchor-based—CGI-C	–	10.7^c

	Physical Component Summary Score
	Study A(n = 232)	Study B(n = 187)
Half of the standard deviation of change	4.6	3.5
Standard error of measurement	4.6	3.1
Effect size of change	0.97	0.71
ROC curves (Farrar et al. method)	3.7^a	2.9^b
ROC curves (alternate method)	3.8	3
Anchor-based—CGI-C	–	4.1^c

CGI-C = clinical global impression of change; ROC = receiver operating characteristic

^a n = 121

^b n = 69

^c n = 109