Table 2 Percentage of returning to work at 1 year (primary outcome).

From: Intensive spa and exercise therapy program for returning to work for low back pain patients: a randomized controlled trial

 

Spa therapy n = 44

Usual care n = 43

Absolute difference (95% CI)†

Odds ratio (95% CI)††

p-value

Without imputation

   Percentage of returning    to work at 1 year, n (%)

18/32 (56.3)

14/33 (42.4)

13.1 (−11.6;37.7)

1.72 (0.62;4.76)

 

After multiple imputation (mean of 20 imputations)

   Percentage of returning    to work at 1 year, %

56.3

41.9

12.6 (−12.0;37.2)

1.69 (0.60;4.73)

0.32

  1. CI: confidence interval.
  2. †Spa therapy group minus usual care group, difference of percentages adjusted on centre.
  3. ††Spa therapy group versus usual care group, odds ratio adjusted on centre.
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