Table 3. Summary statistics (means and s.d.).

	Women		Men		All
	Mean	s.d.	Mean	s.d.	Mean	s.d.
Number	1524		1444		2968
Female					0.51	0.50
BMI	24.10	5.13	25.04	4.36	24.56	4.79
Age (years)	27.36	4.95	27.16	4.96	27.26	4.95
Primary education	0.13	0.34	0.19	0.39	0.16	0.37
Secondary education	0.27	0.44	0.24	0.43	0.26	0.44
Vocational education	0.11	0.31	0.25	0.44	0.18	0.38
Short-term higher education	0.11	0.32	0.06	0.24	0.09	0.29
Middle-term higher education	0.26	0.44	0.15	0.36	0.21	0.41
Long-term higher education	0.12	0.32	0.10	0.30	0.11	0.31
Relationship status	0.61	0.49	0.53	0.50	0.57	0.49
Age difference <6 years	0.67	0.47	0.65	0.48	0.66	0.47
Grew up together	0.72	0.45	0.70	0.46	0.71	0.45
Number of siblings	1.62	0.82	1.64	0.81	1.63	0.81
Brother	0.48	0.50	0.49	0.50	0.49	0.50
Underestimation	0.12	0.32	0.28	0.45	0.20	0.40
Overestimation	0.12	0.33	0.04	0.20	0.08	0.28

Abbreviation: BMI, body mass index (calculated as kg m⁻²).