BMC Medical Research Methodology

Table 1 Comparisons of mean scores, standard deviations of mean scores (SD) and mean range scores

From: Collection of patient-reported outcomes; - text messages on mobile phones provide valid scores and high response rates

	Scores (mean)			SD (mean scores)			Range (mean)
Variable (NRS)^a	SMS	P&P	p-value	SMS	P&P	p-value	SMS	P&P	p-value
Pain	3.45	3.47	0.76^b	1.60	1.61	0.46^b	3.33	3.43	0.55^c
Fatique	3.66	3.64	0.92^b	1.84	1.95	0.65^c	3.71	3.52	0.55^b
Stiffness	4.08	4.13	0.70^b	1.84	2.03	0.16^b	3.19	2.90	0.32^b
Activity	3.29	3.32	0.84^b	1.92	2.08	0.85^c	3.90	3.67	0.37^c

^aNRS = Numeric Rating Scale, 0 - 10, 0 = best, ^bpaired t-test, ^cWilcoxon Signed Rank test.

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