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. 2014 Apr 10;9(5):936–942. doi: 10.2215/CJN.07170713

Table 2.

Cousineau perceived burden scores over time

Time Point Three Times per Week Six Times per Week Between-Group Differencea P Value
Daily Trial
 Baseline 37.7±23.0 37.1±27.6
 Month 4 35.0±22.7 32.9±25.1
  Change from baseline −1.1±2.8 −2.7±2.5 −1.6 (−8.4 to 5.2) 0.64
  Change (imputed) 1.8±4.3 0.6±4.1 −1.2 (−8.0 to 5.6) 0.73
 Month 12 31.2 ±21.9 30.1±22.9
  Change from baseline −2.6±3.1 −4.7±2.7 −2.1 (−9.4 to 5.3) 0.58
  Change (imputed) 1.2±4.7 −1.5±4.4 −2.7 (−9.8 to 4.4) 0.46
Nocturnal Trial
 Baseline 32.9±18.3 32.0±19.7
 Month 4 32.0±16.9 41.1±18.5
  Change from baseline −0.3±2.6 +5.9±2.8 +6.2 (−0.8 to 13.3) 0.08
  Change (imputed) −0.3±2.8 +9.6±3.0 +9.8 (2.4 to 17.3) 0.01
 Month 12 26.9±15.3 33.9±22.0
  Change from baseline −5.7±2.7 +0.5±2.7 +6.1 (−0.8 to 13.1) 0.08
  Change (imputed) −5.4±3.1 +4.0±3.4 +9.4 (0.6 to 18.3) 0.04

Values at baseline, 4 months postrandomization, and 12 months postrandomization are observed means±SDs. Changes from baseline are adjusted means (presented as means±SEM).

a

Treatment effect of six times per week minus three times per week (presented with 95% confidence intervals).