Lifestyles and preventive practices. Absolute figures Frequency of mammograms, by employment situation. 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 Employed 3,385.9 937.4 1,172.9 278.1 918.7 78.9 Unemployed 508.0 143.1 170.6 37.7 155.1 1.6 Student . . . . . . Retired person, pensioner 2,071.1 502.5 879.3 234.9 375.6 78.7 Mainly dedicated to household chores 3,181.9 857.5 1,520.9 230.3 503.1 70.1 Other situations 72.0 20.0 23.7 9.1 17.5 1.7 No data recorded 32.9 0.8 11.2 6.0 2.1 12.8 Notes: .Data protected by statistical secrecy 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