Table 2 Association of educational attainment with anxiety symptoms.

EA	Model 1	Model 2	Model 3
Level 0	Reference	Reference	Reference
Level 1	0.58 (0.53; 0.63)**	0.57 (0.52; 0.63)**	0.68 (0.60; 0.78)**
Level 2	0.44 (0.40; 0.48)**	0.43 (0.39; 0.48)**	0.59 (0.52; 0.67)**
Level 3	0.31 (0.28; 0.34)**	0.33 (0.30; 0.36)**	0.54 (0.48; 0.62)**
Level 4	0.24 (0.21; 0.28)**	0.27 (0.23; 0.32)**	0.44 (0.36; 0.54)**
Level 5	0.16 (0.15; 0.18)**	0.21 (0.19; 0.23)**	0.40 (0.35; 0.47)**
Level 6	0.14 (0.10; 0.21)**	0.22 (0.14; 0.32)**	0.44 (0.27; 0.67)**
AIC	51,275	47,967	32,440

Results are odds ratio with 95% confidence intervals derived from logistic regression for the association of educational attainment with anxiety symptoms.
AIC, Akaike information criterion.
Model 1: age, sex.
Model 2: age, sex, household net worth, employment status, family status, number of children, number of grandchildren, household size, area of living.
Model 3: age, sex, household net worth, employment status, family status, number of children, number of grandchildren, household size, area of living, limitations in instrumental activities of daily living, 10 words delayed recall test, number of chronic diseases, , body mass index, mobility limitation index, number of depressive symptoms, maximal grip strength, physical activity, smoking, excessive alcohol intake, frequency of eating fruits and vegetables per day, drugs for anxiety/depression, drugs for sleep problems.
**p < 0.001; *p < 0.05.

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