Absence of low back pain to demarcate an episode: a prospective multicentre study in primary care

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Published online 2016 Feb 18. doi: 10.1186/s12998-016-0085-z

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Table 3

Comparison with other study samples from general population and secondary care

Variable	General population [8]	Chiropractic primary care population [This study]	Secondary care [7] (Two study samples)
Proportion of at least 4 consecutive weeks free from bothersome pain during the study period, % (95 % CI^a)	83 (78–88)	59 (51–67)	20 (11–29), 18 (13–23)
Proportion women, %	54	49	68, 54
Age mean	50	44	46, 38
Pain intensity 0–10, mean	-	4.3	5.3, 4.9
Study period	12 months	6 months	12 months
Text message interval	Fortnightly	Weekly	Weekly

^a CI confidence interval