Table 3

One year time-weighted clinical outcomes and cumulative costs

HEASMT+HEASRE+HEASMT+HEA HEASMT+HEA - SRE+HEASRE+HEA HEA
Mean (SD)*Mean (SD)*Mean (SD)*Mean (95% CI)Mean (95% CI)Mean (95% CI)
Clinical Outcomes

Pain Reduction [0–10]1.6 (1.9)2.4 (2.1)1.8 (1.9)0.57 (0.23 to 0.92)0.41 (0.05 to 0.76)0.17 (−0.20 to 0.52)
Disability Reduction [0–100]6.1 (8.8)7.4 (9.9)5.6 (8.5)1.67 (–0.15 to 3.41)1.85 (0.06 to 3.57)–0.18 (–1.92 to 1.63)
QALY Gain (SF6D) [0.1–1]0.031 (0.101)0.039 (0.106)0.030 (0.084)0.009 (–0.011 to 0.029)0.009 (–0.009 to 0.027)−0.0001 (−0.018 to 0.018)
QALY Gain (EQ5D) [−0.1−1]0.020 (0.090)0.027 (0.110)0.011 (0.090)0.007 (−0.012 to 0.025)0.015 (−0.004 to 0.033)−0.009 (−0.025 to 0.009)

Costs (2006 US $)

Healthcare779 (281)1,297 (1,792)2,556 (505)515 (225 to 1,094)−1,260 (−1,562 to −682)1,775 (1,590 to 1,948)
Lost productivity1,390 (1,596)548 (844)1,042 (1,299)−842 (−2,194 to −33)−495 (−1,362 to 104)−348 (−1,646 to 643)
Total indirect1,526 (1,597)901 (848)1,573 (1,302)−625 (−1,837 to 245)−672 (−1,481 to −22)47 (−1,170 to 1,111)
Total2,305 (1,634)2,198 (2,040)4,129 (1,438)−111 (−1,354 to 899)−1,932 (−2,796 to −1,097)1,821 (592 to 2,912)
Model-based results with baseline outcome included as a covariate for clinical outcomes,
95% bias-corrected bootstrap confidence intervals, positive values favor the first treatment contrast;

HEA = Home exercise and advice;
SMT = Spinal manipulation therapy;
SRE = Supervised rehabilitative exercise;
Pain reduction = numerical rating scale, higher scores indicate more improvement;
Disability reduction = neck disability index, higher scores indicate more improvement;
QALY = Quality-adjusted life year, higher scores indicate more quality adjusted life years;
Total indirect costs = lost productivity + time + transportation costs.