Table 3.

The sensitivity analysis of the method for handling missing data

Statistical method	Mean group difference	95% CI	P-value
ANCOVA with baseline as covariate	−2.5	−7.0, 2.3	0.27
Posttreatment	−2.0	−6.6, 2.4	0.39
Change score	−1.7	−8.2, 3.3	0.60
Percent change score	−0.0052	−0.071, 0.034	0.88

Note: Using complete case analysis, each of the four baseline adjustment methods were employed to provide treatment effect estimates.

Abbreviations: ANCOVA, analysis of covariance; CI, confidence interval.