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Table 2 Summary statistics for covariates.

From: Exploring the association between occupational complexity and numeracy

Variable N % missing Mean Std. Dev. Min Median Max
Years of education 32,783 0.8 13.462 2.914 4 16 22
Educational level 33,054 0      
 Lower secondary 4317   13.1%     
 Upper secondary 14,757   44.6%     
 Degree 13,980   42.3%     
Age groups 33,054 0      
 25-34 8543   25.8%     
 35-44 9449   28.6%     
 45-54 9284   28.1%     
 55 plus 5778   17.5%     
Gender 33,054 0      
 Male 19,853   60.1%     
 Female 13,201   39.9%