title: [Recommended age groups and frequency of mammography screening: a systematic review].
abstract: The scope of this review was to assess the strength of evidence for the current Portuguese performance indicator on breast cancer screening with mammography in order to determine the recommended age group and periodicity for screening. A search for articles was conducted in the main international databases of medical literature. Articles published between January 2006 and January 2012 addressing the objectives of this review were included. The SORT taxonomy was used to classify the results. Of the 253 articles, five articles met the inclusion criteria and were selected for review. These included three systematic reviews, one meta-analysis and one clinical guideline based on a systematic review. A reduction in breast cancer mortality with mamography screening was the outcome in all articles selected. Mammography screening between 50 and 69 years was recommended in all articles that assess this age group. The clinical guidelines recommended screening every two years. In conclusion, the current literature recommends mammography for women every two years between the ages of 50 and 69 years. This is consistent with the current performance indicator for breast cancer screening in Portugal.
authors.affiliation: Instituto de Ciências da Vida e da Saúde, Escola de Ciências da Saúde, Universidade do Minho, Braga, Minho, Portugal, miguelbastopereira@hotmail.com.
authors.forename: Miguel Basto
authors.initials: MB
authors.lastname: Pereira
authors.affiliation: Unidade de Saúde Familiar Manuel Rocha Peixoto.
authors.forename: Joana
authors.initials: J
authors.lastname: Oliveira
authors.affiliation: Unidade de Saúde Familiar Manuel Rocha Peixoto.
authors.forename: Daniela Pinheiro
authors.initials: DP
authors.lastname: Ribeiro
authors.affiliation: Unidade de Saúde Familiar Manuel Rocha Peixoto.
authors.forename: Bárbara
authors.initials: B
authors.lastname: Castro
authors.affiliation: Instituto de Ciências da Vida e da Saúde, Escola de Ciências da Saúde, Universidade do Minho, Braga, Minho, Portugal, miguelbastopereira@hotmail.com.
authors.forename: John
authors.initials: J
authors.lastname: Yaphe
authors.affiliation: Instituto de Ciências da Vida e da Saúde, Escola de Ciências da Saúde, Universidade do Minho, Braga, Minho, Portugal, miguelbastopereira@hotmail.com.
authors.forename: Jaime Correia
authors.initials: JC
authors.lastname: de Sousa
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D001943:Breast Neoplasms / Q000175:diagnosis; D055088:Early Detection of Cancer / Q000592:standards*; D005260:Female; D017408:Guidelines as Topic; D006801:Humans; D008327:Mammography / Q000592:standards*; D008875:Middle Aged