Table S3.1: Predicting the prevalence of categories related to 'thoroughness'. Table shows coefficients from negative binomial regression models. Standard errors in parentheses.

	Materials and Methods	Presentation and Reporting	Results and Discussion	Importance and Relevance
(Intercept)	6.07 (0.39)***	4.78 (0.28)***	2.25 (0.17)***	1.39 (0.09)***
JIF group: 2 (ref.: JIF group: 1)	1.99 (0.56)***	1.37 (0.41)***	0.77 (0.25)**	0.23 (0.13)
JIF group: 3	1.77 (0.60)**	0.61 (0.43)	0.68 (0.27)*	0.17 (0.14)
JIF group: 4	3.06 (0.61)***	1.29 (0.44)**	1.08 (0.27)***	0.27 (0.15)
JIF group: 5	3.65 (0.58)***	1.69 (0.42)***	1.24 (0.26)***	0.26 (0.14)
JIF group: 6	3.21 (0.60)***	1.02 (0.43)*	0.74 (0.27)**	0.09 (0.14)
JIF group: 7	4.57 (0.60)***	1.60 (0.43)***	1.48 (0.27)***	0.38 (0.14)**
JIF group: 8	4.19 (0.62)***	1.29 (0.45)**	1.37 (0.28)***	0.47 (0.15)**
JIF group: 9	4.86 (0.66)***	1.55 (0.47)**	1.54 (0.29)***	0.48 (0.16)**
JIF group: 10	6.47 (0.63)***	1.53 (0.46)***	1.68 (0.28)***	0.80 (0.15)***
AIC	72257.46	66401.31	55458.71	41065.90
Log Likelihood	-36115.73	-33187.66	-27716.36	-20519.95
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