Frequently repeated measurements -our experience of collecting data with SMS

Table 1 The number of subjects, inclusion and exclusion criteria and the baseline characteristics of the included subjects

Study N	Inclusion criteria	Exclusion criteria	Female %	Age, mean	Education/Work %	Health, 5 points %	Health EQ-5D mean	Pain NRS/VAS mean
MC Chiro 321	Non-specific LBP	Specific LBP	56.4	43	Heavy 10.9	Excellent 5.7	0.6925	5.27 (n = 300)
	Working age				Standing 31.8	Excellent 5.7
	Fluent in Swedish				Standing 31.8	Very Good 38.8
					Sitting 46.1	Very Good 38.8
						Good 42.8
						Somewhat 14.7
						Poor 3.7
SCIP Falls 224	Traumatic SCI	Complete injuries above C5-level,	22.9	49	< 9 years 31.5		0.4136	0.77
	> 18 years old	Complete injuries above C5-level,			High school 30,6
	Fluent in Swedish /Norwegian	Injuries below L5 level,			High school 30,6
	Fluent in Swedish /Norwegian	Injuries classified as AIS E^a			University 37,9
Work-Up 352	Early back and neck pain	Identified abuse, retirement pension, ongoing acute medical treatment, pregnancy	65.3	44	< 9 years 8.5	Excellent 7.1	0.5046	5.20 (n = 332)
	18–67 years				High school 50.0	Excellent 7.1
	Last year: working ≥4 weeks, short sick leave ≤60 days, Linton short version ≥40 p				University 21.9	Very Good 44.6
					Other 19.3	Very Good 44.6
						Good 36.9
						Somewhat 10.2
						Poor 0.6
PARA 220	RA	Already obtain physical activity levels aimed at in the study	81.4	59	< 9 years 18.2		EQ-5D thermometer 30.58	2.9
	18–75 years old				High school 20.9
	Independent in daily living				High school 20.9
	Fluent in Swedish				University 50.5
	Fluent in Swedish				Other 10.5
SPA 106	Working age		70.5	46	High school 14.4	Very Good 25.7
	Employed in primary care				University 66.7	Very Good 25.7
						Good 36.2
						Somewhat 16.2
						Poor 2.9

EQ-5D Euro Qol 5 dimensions, LBP Low back pain, SCI Spinal Cord Injury, AIS E^a refers to normal sensibility and motor function, RA Rheumatoid Arthritis

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