Table 5

Coefficients from linear regression of journal impact factor on research article author gender and affiliation

	Journal impact factor
First author gender
Man	REF
Woman	−6.40*
Last author gender
Man	REF
Woman	−11.71*
First author affiliation
Low-income and middle-income countries	REF
High-income countries	19.18*
Last author affiliation
Low-income and middle-income countries	REF
High-income countries	18.54*
First author gender and affiliation
Women, low-income and middle-income countries	REF
Women, high-income countries	13.91*
Men, low-income and middle-income countries	1.92
Men, high-income countries	24.12*
Last author gender and affiliation
Women, low-income and middle-income countries	REF
Women, high-income countries	7.06
Men, low-income and middle-income countries	0.01
Men, high-income countries	21.73*