Baseline means: vehicle 116.1, drug 114.0; baseline-week 4 correlation r = 0.63
Week 4 only: drug - vehicle = -14.6 (95% CI -25.0 to -4.2), Welch t = -2.90, df = 22.0, p = 0.008
Change from baseline: drug - vehicle = -12.5 (95% CI -21.7 to -3.3), Welch t = -2.82, df = 20.9, p = 0.010
Percent change: drug - vehicle = -11.1 (95% CI -19.8 to -2.4), Welch t = -2.65, df = 21.6, p = 0.015
ANCOVA (week 4 adjusted for baseline): drug - vehicle = -13.4 (95% CI -21.0 to -5.7), t = -3.63, df = 21, p = 0.002