eTable 3. Proportions of persons with limited health literacy in the various subgroups.

	n	Proportion (%)	95% CI	p-value*
Sex
Male	503	53.0	[48.6; 57.4]	0.276
Female	553	55.5	[51.4; 59.6]
Age (years)
15–29	178	47.3	[40.0; 54.6]	<0.001
30–45	231	47.2	[40.8; 53.6]
46–64	341	55.2	[49.9; 60.5]
65 and over	307	66.4	[61.1; 71.7]
Education level
Low	403	62.2	[57.5; 66.9]	<0.001
Intermediate	477	50.3	[45.8; 54.8]
High	174	51.3	[43.9; 58.7]
Health insurance status
Statutory	979	54.1	[51.0; 57.2]	0.324
Private	72	57.0	[45.6; 68.4]
Immigration background
No	944	52.8	[49.6; 56.0]	<0.001
Yes	109	70.5	[61.9; 79.1]
Functional literacy skills
Low	263	70.8	[65.3; 76.3]	<0.001
Adequate	793	50.4	[46.9; 53.9]
Social status
Low	193	78.3	[72.5; 84.1]	<0.001
Intermediate	711	54.6	[50.9; 58.3]
High	135	37.8	[29.6; 46.0]

* p-values from chi-square tests

95% CI, 95% confidence interval