Table 3.

Treatment effect of –1 BDI units

	RCT (n = 2000)		PRPT (n = 2000)
			Preference arm (n = 1600)		Randomized arm (n = 400)
	Unadjusted	Adjusted	Unadjusted	Adjusted	Unadjusted	Adjusted
Treatment = –1, confounder = 0
Percentage significant	82.92	82.92	39.77	37.52	25.35	25.35
Treatment effect	−1.002	−1.002	−0.9930	−0.992	−0.995	−0.995
Standard error	0.345	0.345	0.583	0.604	0.770	0.770
Treatment = –1, confounder = 1
Percentage significant	82.40	82.55	66.97	37.27	25.57	25.65
Treatment effect	−0.994	−0.994	−1.395	−0.993	−1.007	−1.007
Standard error	0.345	0.345	0.584	0.604	0.771	0.769
Treatment = –1, confounder = 2
Percentage significant	82.08	82.67	86.55	38.95	25.48	25.80
Treatment effect	−0.9933	−0.9933	−1.809	−1.010	−0.9933	−0.9933
Standard error	0.347	0.345	0.587	0.604	0.776	0.769