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Table 3 The effect of time (in months) on placebo response across all trials, by outcome type

From: A meta-analysis of temporal changes of response in the placebo arm of surgical randomized controlled trials: an update

Outcome type

Intercept

Coefficient

β0 (95% CI)

P value

β (95% CI)

P value

Subjective

0.68 (0.53, 0.82)

<0.0001

-0.0042 (-0.024, 0.016)

0.67

Assessed

0.37 (-0.070, 0.81)

0.086

-0.0071 (-0.026, 0.011)

0.38

Objective

0.28(0.11, 0.46)

0.0037

-0.030 (-0.050, -0.010)

0.0084

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Trials

ISSN: 1745-6215