Table S3.26: Predicting the prevalence of categories related to 'helpfulness'. Models use the raw journal impact factor. Table shows coefficients from negative binomial regression models. Standard errors in parentheses.

	Suggestion and Solution	Example	Criticism	Praise
(Intercept)	6.22 (0.15)***	2.92 (0.13)***	2.93 (0.09)***	1.55 (0.04)***
JIF (raw)	0.09 (0.03)**	0.08 (0.03)**	0.10 (0.02)***	0.05 (0.01)***
AIC	66348.73	62559.92	54815.53	37824.04
Log Likelihood	-33169.37	-31274.96	-27402.77	-18907.02
N	10000	10000	10000	10000
N groups: Journal ID	1644	1644	1644	1644
N groups: Reviewer ID	9259	9259	9259	9259
***p < 0.001; **p < 0.01; *p < 0.05