Table 1 Age, sex and spinal pain characteristics for the four cohorts. Where nothing else is noted, results are reported as proportions with 95% confidence intervals (CI)
Cohort 1 (no SMS) n = 1291 | Cohort 1b (SMS) n = 215 | Cohort 2a (no SMS) n = 36 | Cohort 2b (SMS) n = 161 | ||
|---|---|---|---|---|---|
5th grade 6th grade | 50% 50% | 40% 60% | Age at baseline mean (95%CI) | 48 (45–52) | 47 (45–48) |
Male | 52% (49–54%) | 43% (36–50%) | Male | 47% (30–65%) | 41% (33–49%) |
NPa | 36% (33-39%) | 36% (29–42%) | |||
MBPa | 24% (21-26%) | 28% (22–34%) | Bothersomeness past 2 weeksc Median (IQR) | 3 (2–4) | 2 (2–3) |
LBPa | 16% (14-18%) | 24% (18–30%) | > 30 days of LBP previous year | 72% (54–86%) | 62% (54–70%) |
SP | 46% (44–49%) | 50% (43–56%) | RMDQd mean (95% CI) | 39 (29–49) | 29 (24–33) |
Pain intensityb mean (95% CI) | 4.74 (4.46–5.02) | 3.89 (3.52–4.27) | VAS past week mean (95% CI) | 4.61 (3.43–5.79) | 3.23 (2.81–3.65) |