Table 4.

Publication shares of mixed- or same-sex authors cooperations according to journal in 2017/2018

2017/2018	Observations and percentages									Probabilities between author combinations (AOR [95% CI])
	Total observ.	♂♂		♀♀		♀♂		♂♀		♂♂ vs. ♀♀	Des. p-value	♀♂ vs. ♀♀	Des. p-value	♀♂ vs. ♂♀	Des. p-value	♂♂ vs. ♀♂	Des. p-value
		Group observ.	AER [95% CI]	Group observ.	AER [95% CI]	Group observ.	AER [95% CI]	Group observ.	AER [95% CI]
Radiology	858	479	55.8 [52.4–59.2]	102	11.9 [9.7–14.1]	202	23.5 [20.7–26.4]	75	8.7 [6.8–10.7]	1.5 [1.5–1.7]	< .0001	1.1 [1.1–1.2]	< .0001	1.2 [1.1–1.2]	< .0001	1.4 [1.3–1.5]	< .0001
Invest Radiol	184	101	54.9 [47.6–62.2]	14	7.6 [3.7–11.5]	46	25.0 [18.6–31.4]	23	12.5 [7.6–17.4]	1.6 [1.4–1.8]	< .0001	1.2 [1.1–1.3]	.0003	1.1 [1.0–1.3]	.0314	1.4 [1.1–1.6]	< .0001
Eur Radiol	1008	566	56.2 [53.0–59.3]	85	8.4 [6.7–10.2]	258	25.6 [22.9–28.3]	99	9.8 [8.0–11.7]	1.6 [1.5–1.7]	< .0001	1.2 [1.1–1.2]	< .0001	1.2 [1.1–1.2]	< .0001	1.4 [1.3–1.5]	< .0001
MRM	991	692	69.8 [66.9–72.7]	25	2.5 [1.5–3.5]	205	20.7 [18.1–23.3]	69	7.0 [5.4–8.6]	2.0 [1.9–2.1]	< .0001	1.2 [1.2–1.2]	< .0001	1.2 [1.1–1.2]	< .0001	1.6 [1.5–1.8]	< .0001
AJR	752	387	51.5 [47.8, 55.1]	107	14.2. [11.7–16.8]	165	21.9 [18.9, 25.0]	93	12.4 [10.0,14.8]	1.5 [1.4, 1.6]	< .0001	1.1 [1.0, 1.1]	.0042	1.1 [1.0, 1.2]	.0002	1.3 [1.2, 1.5]	< .0001
EJR	682	371	54.4 [50.6–58.2]	88	12.9 [10.3–15.5]	137	20.1 [17.0–23.2]	86	12.6 [10.1–15.2]	1.5 (1.4–1.6]	< .0001	1.1 [1.0–1.1]	.0088	1.08 [1.0–1.1]	.0056	1.4 [1.3–1.5]	< .0001
Clin Radiol	350	176	50.3 [44.9–55.6]	43	12.3 [8.8–15.8]	74	21.1 [16.8–25.5]	57	16.3 [12.3–20.2]	1.5 [1.3–1.6]	< .0001	1.1 [1.0–1.2]	.0261	1.1 [1.0–1.1]	.4499	1.3 [1.2–1.5]	< .0001
ROFO	111	74	66.7 [57.7–75.6]	1	0.9 [NA–2.7]	30	27.0 [18.6–35.5]	6	5.4 [1.1–9.7]	1.9 (1.7–2.2]	< .0001	1.3 [1.2–1.5]	< .0001	1.2 [1.1–1.4]	.0003	1.5 [1.2–1.9]	< .0001
Acta Radiol	346	169	48.8 [43.5–54.2]	39	11.3 [7.9–14.7]	99	28.6 [23.8–33.5]	39	11.3 [7.9–14.7]	1.5 [1.3–1.6]	< .0001	1.2 [1.1–1.3]	< .0001	1.2 [1.1–1.3]	< .0001	1.2 [1.1–1.4]	.0003
Jpn J Radiol	180	139	77.2 [71–83.5]	4	2.2 [0–4.4]	26	14.4 [9.2–19.7]	11	6.1 [2.5–9.7]	2.1 [1.9–2.3]	< .0001	1.1 [1.1–1.2]	.0005	1.1 [1.0–1.2]	.0687	1.9 [1.6–2.2]	< .0001

Multinominal logistic regression model. Abbreviations: AER adjusted event rate, AOR adjusted odds ratio, CI confidence interval, ♂♂ female same-sex authorships, ♀♀ male same-sex authorships, ♀♂ female first author with male last author, ♂♀ male first author with female last author