Health care. Relative figures Performance of a mammography in the recommended period for the breast cancer screening by level of studies. Women aged 50 to 69 years old Units: percentages Total In the last 2 years More than 2 years but less than 3 years ago More than 3 years ago Never Total 100.00 77.05 9.48 5.89 7.59 Cannot read or write, or incomplete primary education 100.00 69.96 12.26 6.91 10.87 Complete primary education 100.00 79.11 8.23 5.90 6.75 Secondary education, 1st stage 100.00 75.37 10.02 6.59 8.02 Secondary education, 2nd stage 100.00 81.95 7.72 5.12 5.21 Advanced professional training or the equivalent 100.00 82.18 3.91 3.47 10.44 University education 100.00 79.22 10.11 4.18 6.49 Notes: The symbol '.' shall be deemed as data which cannot be given due to an insufficient sample. The symbol '..' shall be deemed as data which are not collected for this classification in the table. 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: Ministry of Public Health, Social Services and Equality and INE