Table 4.

Mediation pathways construction and mediation analysis results for MM 1–6

	Independent variable	Mediator variable	Outcome variable	95% CI indirect effect
MM 1	BEES score	vaINS/mINS estimates of ${\mathit{S}\mathit{V}}_{\mathit{b}\mathit{e}\mathit{n}\mathit{e}\mathit{f}\mathit{i}\mathit{t}}$	Other-regarding preferences	0.018 to 0.625
MM 2	BEES score	Other-regarding preferences	vaINS/mINS estimates of ${\mathrm{SV}}_{\mathrm{benefit}}$	−0.001 to 0.083
MM 3	Other-regarding preferences	BEES score	vaINS/mINS estimates of ${\mathrm{SV}}_{\mathrm{benefit}}$	−0.006 to 0.018
MM 4	Other-regarding preferences	vaINS/mINS estimates of ${\mathrm{SV}}_{\mathrm{benefit}}$	BEES score	−0.002 to 0.083
MM 5	vaINS/mINS estimates of ${\mathrm{SV}}_{\mathrm{benefit}}$	Other-regarding preferences	BEES score	−1.073 to 4.610
MM 6	vaINS/mINS estimates of ${\mathrm{SV}}_{\mathrm{benefit}}$	BEES score	Other-regarding preferences	−0.277 to 2.664

The significant mediation model is highlighted in bold font.