88 Chapter 3 The neighbourhood SES-score differed statistically significant between attenders and non-attenders (Likelihood Ratio test: p<.01). Women living in a neighbourhood with the highest SES-scores, were the more likely to participate (ascending ORs from 1.43 to 1.66; for SES-2 to SES-4, compared to SES 1). The neighbourhood SES-scores also differed statistically between the different attendance-groups with CRC (Likelihood Ratio test: p=.05). People living in a SES-2 neighbourhood were more likely to participate (OR 1.64), compared to people living in a SES-1 neighbourhood. Attendance was not statistical different between the several CRC-stages. Despite, a stage 4 CRC had an OR of 0.56 on attendance, compared with a stage 1. In addition, when the interaction effect for both independent variables was determined, no statistical differences could be established (Likelihood Ratio test: p=0.24). However, when taken the ORs into account non-attenders, there seems to be a tendency that non-attenders were more likely to live in neighbourhoods with lower SES-scores and had the more unfavourable cancer stages. (Table 4). Table 4. Results univariate regression analyses on attendance, concerning invitees and significant abnormalities. OR (95% CI) p-value n SES (invitees) SES 1 reference <.01* 21,601 SES 2 1.43 (1.36-1.51) <.01* 15,117 SES 3 1.50 (1.39-1.62) <.01* 5,566 SES 4 1.66 (1.58-1.73) <.01* 30,997 SES (invitees with CRC) SES 1 reference 0.05* 151 SES 2 1.64 (1.18-2.26) 0.01* 114 SES 3 1.67 (1.05-2.64) 0.12 45 SES 4 1.56 (1.19-2.05) 0.42 205 Stage Stage 1 reference 0.38 198 Stage 2 0.76 (0.43-1.36) 0.36 109 Stage 3 0.80 (0.47-1.38) 0.43 147 Stage 4 0.56 (0.29-1.08) 0.09 61 SES x Stage SES 4 x Stage 1 reference 0.24 78
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