Table 1.

Fixed and random effects of costs, benefits and their interaction.

fixed effects		estimate [95% CI]
intercept		−4.63 [−3.04, −6.23]
costs		1.46 [3.59, −0.67]
benefits		6.33 [8.45, 4.21]
costs × benefits		−3.76 [−0.88, −6.64]
random effects		variance
participants	intercepts	0.892
	costs	4.141
	benefits	3.454
	costs × benefits	2.912
items	intercepts	2.923