Back pain outcomes in primary care following a practice improvement intervention:- a prospective cohort study

Table 2 Multiple regression analysis: prognostic factor effects on follow-up RMDQ scores

Prognostic factor†	Both sexes (n = 101)		Males (n- = 49)		Females (n = 52)
	Effect on RMDQ (95%CI)	(p)	Effect on RMDQ (95%CI)	(p)	Effect on RMDQ (95%CI)	(p)
In post-workshops Cohort (y/n)	-1.433 (-3.25-0.39)	0.121	-1.142 (-4.17-1.89)	0.451	-2.897 (-5.32- -0.47)	0.020
RMDQ baseline score (/24)	0.299 (0.10-0.50)	0.003	0.362 (0.05-0.68)	0.026	0.086 (-1.9-0.36)	0.535
Downhearted (/5)	0.991 (0.26-1.72)	0.008	0.503 (-0.67-1.68)	0.451	1.634 (0.66-2.61)	0.002
Self-rated health (/4)	-1.245 (-2.27- -0.22)	0.018	-1.368 (-2.85-0.11)	0.069	-1.524 (-3.09-0.05)	0.056
Leg pain bothersomeness (/4)	0.644 (-0.03-1.32)	0.063	0.323 (-0.68-1.33)	0.520	1.431 (0.43-2.44)	0.006
Episode duration (/12)	0.270 (-0.06-0.60)	0.106	0.404 (-0.14-0.95)	0.140	0.074 (-0.52-0.37)	0.741

† For every higher category of each prognostic factor, the 'Effect' in RMDQ units, rises by the amount shown. For example, the figure 0.991 for 'Downhearted' under 'Both sexes' means that the follow-up RMDQ score is 0.991 units higher for every higher category of Downheartedness.

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