54 Chapter 2 Cervical cancer screening programme (continued) Reference Study design Number of participants (n) Participants, collection period, region Characteristics Outcomes I-Change model (Kreuger, van Oers et al. 1999) Ref: 28 Retrospective observational cohort study 70,621 Women, aged 35-54, between 1992 and 1994. In 53 neighbourhoods of Rotterdam (South Holland). SES Marital status Nationality Range: 36-58%, depending on neighbourhood. Risk groups are clustered in neighbourhoods and can be identified by SES, marital status and nationality. High-SES level of a neighbourhood, low-percentage migrants, single or divorced women correspond with high attendances. Predisposing factors
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