Table 2

Weighted 3-month event rates after multiple treatment propensity scoring

	Aspirin monotherapy	Clopidogrel–aspirin	Other combination	P value*	P1†	P2†
Primary outcome
Composite of all strokes, MI and all-cause mortality	16.28 (15.28–17.29)	13.04 (12.08–14.00)	15.39 (11.33–19.45)	<0.001	1.000	0.406
Secondary outcome
All strokes	15.12 (14.14–16.09)	12.15 (11.22–13.08)	15.26 (11.22–19.31)	<0.001	1.000	0.191
All-cause mortality	1.82 (1.43–2.21)	1.37 (1.02–1.73)	0.18 (0.00–0.69)	0.037	0.078	0.234
MI	0.24 (0.10–0.38)	0.32 (0.15–0.49)	0.00 (0.00–0.00)	0.549	0.546	0.662
Ischaemic stroke	14.88 (13.91–15.85)	11.90 (10.98–12.83)	15.22 (11.18–19.27)	<0.001	1.000	0.151
Haemorrhagic stroke	0.27 (0.12–0.42)	0.28 (0.12–0.44)	0.04 (0.00–0.30)	0.715	0.819	0.989

P1: aspirin monotherapy vs other combination; P2: clopidogrel–aspirin vs other combination.
*P value by the IPTW log-rank test.
†Adjusted p value by the Bonferroni adjustment method.
IPTW, inverse probability of treatment weighting; MI, myocardial infarction.