Table 4.

Comparison of four treatments^a promoting smoking cessation when assuming equal, proportional, or unequal heterogeneity variances: posterior medians and 95% credible intervals for log odds ratios and between‐trial standard deviations, for the outcome of smoking cessation at 12 months

	Approach 1:	Approach 1:	Approach 2:	Approach 2:	Approach 3:	Approach 3:	Approach 4:
	Equal Variances	Equal Variances	Proportional	Proportional	Unequal Variances	Unequal Variances	Scaled Inverse
	(Vague Prior)	(Inf. Prior)	Variances (Vague Priors)	Variances (Inf. Priors)	(Vague Priors)	(Inf. Priors)	Wishart (Inf. Prior)
dAB	0.48 (−0.29, 1.30)	0.47 (−0.23, 1.20)	0.51 (−0.26, 1.31)	0.42 (−0.32, 1.19)	0.49 (−0.26, 1.36)	0.52 (−0.07, 1.20)	0.39 (−0.13, 1.01)
dAC	0.84 (0.39, 1.34)	0.81 (0.41, 1.26)	0.83 (0.39, 1.34)	0.82 (0.42, 1.26)	0.84 (0.35, 1.40)	0.81 (0.38, 1.28)	0.80 (0.39, 1.24)
dAD	1.09 (0.26, 2.00)	1.05 (0.30, 1.87)	1.11 (0.3, 1.99)	1.02 (0.19, 1.92)	1.16 (0.19, 2.20)	1.12 (0.48, 1.80)	0.92 (0.29, 1.70)
τ	0.82 (0.55, 1.27)	0.73 (0.50, 1.09)	‐	‐	‐	‐	‐
τAB	‐	‐	0.83 (0.55, 1.31)	0.70 (0.48, 1.04)	0.81 (0.20, 1.63)	0.72 (0.13, 1.24)	0.45 (0.15, 1.20)
τAC	‐	‐	0.83 (0.55, 1.31)	0.70 (0.48, 1.04)	0.93 (0.60, 1.50)	0.79 (0.52, 1.24)	0.77 (0.51, 1.22)
τAD	‐	‐	0.83 (0.55, 1.31)	0.70 (0.48, 1.04)	1.12 (0.48, 1.89)	0.77 (0.18, 1.30)	0.63 (0.17, 1.75)
τBC	‐	‐	0.73 (0.41, 1.31)	0.97 (0.67, 1.45)	0.73 (0.15, 1.57)	0.28 (0.06, 0.97)	0.54 (0.16, 1.28)
τBD	‐	‐	0.73 (0.41, 1.31)	0.97 (0.67, 1.45)	0.87 (0.17, 1.83)	0.25 (0.06, 0.91)	0.49 (0.15, 1.50)
τCD	‐	‐	0.73 (0.41, 1.31)	0.97 (0.67, 1.45)	0.89 (0.18, 1.84)	0.28 (0.06, 1.06)	0.56 (0.18, 1.59)

^a No intervention (A); self‐help (B); individual counselling (C); group counselling (D).