Comparison between data obtained through real-time data capture by SMS and a retrospective telephone interview

Table 1 Comparison of baseline characteristics between patients who could and could not be contacted

		Contactable patients, n = 25	Non contactable patients, n = 6	p value for differences of mean between patients contactable and not contactable
Age	Mean	41	37	.3
	Min	26	21
	Max	58	50
LBP according to Low Back Pain Rating Scale (Range 0-30)	Mean	19	17	.2
	Min	10	11
	Max	26	24
Disability according to Low Back Pain Rating Scale (Range 0-100%)	Mean	52	45	.4
	Min	23	19
	Max	80	79
Depression score according to Beck Depression Inventory	Mean	10	12	.5
	Min	1	4
	Max	28	28
Psychosocial score according to Orebro Musculoskeletal Pain Screening Questionnaire	Mean	115	104	.4
	Min	69	52
	Max	154	161

ISSN: 2045-709X