Table 2. The effect of antiplatelet treatment on the progression of white matter hyperintensities (WMH).

†WMH volume change	Univariate unadjusted		IPW adjusted
	B (std. error)	p-value	B (std. error)	p-value
Total	-0.538 (0.329)	0.105	-0.012 (0.225)	0.957
Deep	-0.671 (0.382)	0.082	-0.108 (0.267)	0.686
Periventricular	-0.498 (0.354)	0.163	-0.041 (0.237)	0.864

IPW = inverse probability weighting; B = beta; std. error = standard error.

^†A natural logarithmic transformation of WMH volume change was performed to achieve a normal distribution.