Table 2. Proportion contributions of direct comparisons to the ‘ x versus y’ network meta-analysis treatment effect in the network of topical antibiotics without steroids for chronically discharging ears.

	xy	xv	yu	yv	uv
xy	$p_{xy}=\frac{{\phi }_1}{\left|{\pi }_1\right|}$ = 63.5%	$p_{xv}=\frac{{\phi }_2}{\left|{\pi }_2\right|}+\frac{{\phi }_3}{\left|{\pi }_3\right|}$ = 16.4%	$p_{yu}=\frac{{\phi }_3}{\left|{\pi }_3\right|}$ = 3.8%	$p_{yv}=\frac{{\phi }_2}{\left|{\pi }_2\right|}$ = 12.6%	$p_{uv}=\frac{{\phi }_3}{\left|{\pi }_3\right|}$ = 3.8%

x, no treatment; y, quinolone antibiotic; u, non-quinolone antibiotic; v, antiseptic.