Table S3.20: Predicting the prevalence of categories related to 'helpfulness'. Sample is limited to reviewers classified as 'male'. Table shows coefficients from negative binomial regression models. Standard errors in parentheses.

	Suggestion and Solution	Example	Criticism	Praise
(Intercept)	5.09 (0.37)***	1.98 (0.31)***	2.28 (0.21)***	1.45 (0.09)***
JIF group: 2 (ref.: JIF group: 1)	0.96 (0.53)	0.61 (0.45)	0.73 (0.30)*	0.22 (0.14)
JIF group: 3	1.11 (0.57)	0.92 (0.48)	0.69 (0.31)*	0.24 (0.14)
JIF group: 4	1.63 (0.57)**	1.21 (0.47)*	1.06 (0.31)***	0.12 (0.14)
JIF group: 5	1.77 (0.55)**	1.67 (0.46)***	1.26 (0.30)***	0.42 (0.14)**
JIF group: 6	0.88 (0.55)	1.24 (0.46)**	0.64 (0.31)*	0.22 (0.14)
JIF group: 7	1.84 (0.55)***	1.60 (0.46)***	1.42 (0.30)***	0.46 (0.14)***
JIF group: 8	1.84 (0.57)**	1.41 (0.48)**	1.38 (0.32)***	0.42 (0.15)**
JIF group: 9	1.75 (0.61)**	1.86 (0.50)***	1.93 (0.33)***	0.58 (0.15)***
JIF group: 10	1.99 (0.57)***	1.94 (0.48)***	2.09 (0.32)***	0.74 (0.15)***
AIC	36037.58	34902.79	30230.31	21076.87
Log Likelihood	-18005.79	-17438.40	-15102.16	-10525.43
N	5461	5461	5461	5461
N groups: Journal ID	1324	1324	1324	1324
N groups: Reviewer ID	4972	4972	4972	4972
***p < 0.001; **p < 0.01; *p < 0.05