Table 6 Regression table of mental rotation performances according to all five sex*gender factors and covariates

Model 1

0.042

0.038

0.042

0.003

 Birth-assigned sex (male = 0, female = 1)

− 1.530

0.504

− 0.206

− 3.038

0.003

− 2.523

− 0.537

Model 2

0.044

0.026

0.002

0.054

 Testosterone

− 0.001

0.004

− 0.029

− 0.355

0.723

− 0.009

0.007

 Estradiol

− 0.190

0.584

− 0.025

− 0.325

0.746

− 1.340

0.961

 Progesterone

0.002

0.003

0.037

0.473

0.637

− 0.005

0.009

Model 3

0.045

0.017

0.001

0.148

 Gender identity, woman (not a woman: 0, woman: 1)

− 0.468

1.004

− 0.060

− 0.467

0.641

− 2.447

1.510

 Gender identity, GD (Not GD = 0, GD = 1)

− 0.258

0.859

− 0.031

− 0.300

0.764

− 1.951

1.435

Model 4

0.056

0.019

0.011

0.159

 BEM femininity

0.105

0.380

0.020

0.277

0.782

− 0.645

0.856

 BEM masculinity

− 0.521

0.339

− 0.109

− 1.538

0.126

− 1.190

0.147

Model 5

0.062

0.020

0.006

0.162

 Sexual orientation (0 = heterosexual, 1 = non-heterosexual)

0.639

0.586

0.084

1.091

0.277

− 0.516

1.794

Model 6: covariates

0.113

0.039

0.051

0.091

 Age

− 0.053

0.033

− 0.122

− 1.613

0.108

− 0.117

0.012

 DHEA/cortisol ratio

0.000

0.000

− 0.078

− 1.090

0.277

− 0.001

0.000

 Language (0 = French, 1 = English)

− 0.932

0.771

− 0.089

− 1.209

0.228

− 2.452

0.588

 Hormone and surgery index

1.048

0.647

0.131

1.620

0.107

− 0.228

2.323

 Contraceptive use (0 = no contraceptive, 1 = contraceptive)

0.523

0.747

0.056

0.700

0.485

− 0.950

1.995

 Substance use index

0.045

0.203

0.016

0.223

0.824

− 0.355

0.446

 Physical and mental health index

− 0.673

0.354

− 0.139

− 1.899

0.059

− 1.372

0.026