European Health Survey  
TOBACCO USE
Average number of years in which the person has smoked daily, according to sex and educational level. Average and standard deviation. Population aged 16 years old and over that smokes or has smoked daily for at least one year
Units: average and standard deviation

	Average	Standard deviation	
Both sexes	
    Total	17.41	13.09	
    Cannot read or write, or incomplete primary education	27.84	14.65	
    Complete primary education	20.62	13.47	
    Secondary education, 1st stage	14.11	11.20	
    Secondary education, 2nd stage	15.30	12.01	
    Advanced professional training or the equivalent	13.46	10.22	
    University education	14.03	10.85	
Males	
    Total	20.50	13.86	
    Cannot read or write, or incomplete primary education	29.29	14.42	
    Complete primary education	23.03	13.76	
    Secondary education, 1st stage	16.37	11.65	
    Secondary education, 2nd stage	17.75	12.88	
    Advanced professional training or the equivalent	15.43	10.82	
    University education	16.41	12.20	
Females	
    Total	12.06	9.53	
    Cannot read or write, or incomplete primary education	16.12	10.72	
    Complete primary education	13.77	9.78	
    Secondary education, 1st stage	10.66	9.49	
    Secondary education, 2nd stage	12.31	10.08	
    Advanced professional training or the equivalent	10.83	8.68	
    University education	11.57	8.60	
Notes:
The symbol '.' shall be deemed as data which is not collected
 The symbol '..' shall be deemed as data which cannot be given due to an insufficient sample
 The symbol '...' shall be deemed as an error of division by zero
 The data corresponding to cells with fewer than 35 thousand persons must be considered with caution, as they may be affected by a high degree of sampling error.
Source: National Statistics Institute