Nationality Frequency of mammograms Total Total Total 9,306.8 Total At least once a year 2,470.8 Total Every two years 3,783.3 Total Every three years or more 801.3 Total Never 2,005.9 Total No data recorded 245.5 Spanish Total 8,603.0 Spanish At least once a year 2,281.4 Spanish Every two years 3,615.5 Spanish Every three years or more 730.5 Spanish Never 1,747.2 Spanish No data recorded 228.3 Foreign Total 679.2 Foreign At least once a year 189.4 Foreign Every two years 155.3 Foreign Every three years or more 66.4 Foreign Never 256.2 Foreign No data recorded 11.8 No data recorded Total 24.6 No data recorded At least once a year 0.0 No data recorded Every two years 12.4 No data recorded Every three years or more 4.3 No data recorded Never 2.5 No data recorded No data recorded 5.4