Lifestyles and preventive practices. Absolute figures 
Frequency of mammograms, by nationality. Women aged 20 years old and over who have had a mammogram at some point in time
Units: thousands of persons

	Total	At least once a year	Every two years	Every three years or more	Never	No data recorded	
Total	9,306.8	2,470.8	3,783.3	801.3	2,005.9	245.5	
Spanish	8,603.0	2,281.4	3,615.5	730.5	1,747.2	228.3	
Foreign	679.2	189.4	155.3	66.4	256.2	11.8	
No data recorded	24.6	0.0	12.4	4.3	2.5	5.4	
Notes:
The symbol '.' shall be deemed as data which cannot be provided since it may be affected by sampling errors.
 The symbol '..' shall be deemed as data which is not collected.
 The symbol '...' shall be deemed as an 'error of division by zero'.
Source: Ministry of Health and Consumption and INE