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Table 2 Estimated Odds Ratios (95% CIs) of inconsistent responses for ever having had amammogram* according to baseline sociodemographic and health characteristics amongCanadian women (aged 40+) assessed in the 1994–95 and 1996–97 NPHS (n = 2255).

From: Inconsistent self-reported mammography history: Findings from the National Population Health Survey longitudinal cohort

Characteristic Age-Adjusted OR (95%CI) Adjusted OR (95%CI)
Age Group   
   40–49 2.40 (1.41–4.09) 2.11 (1.15–3.88)
   50–69 1.00 1.00
   70+ 3.62 (2.05–6.38) 3.18 (1.83–5.54)
Household Income   
   not stated 2.02 (0.48–8.49) 1.92 (0.51–7.21)
   low ($0–19,999) 1.95 (1.16–3.28) 1.84 (1.04–3.24)
   moderate ($20,000–59,999) 1.00 1.00
   high ($60,000+) 0.32 (0.10–0.96) 0.34 (0.11–1.05)
Educational Attainment   
   elementary / some secondary 1.00 1.00
   secondary graduate / some post secondary 0.60 (0.34–1.05) 0.80 (0.45–1.42)
   post-secondary degree 0.39 (0.21–0.72) 0.59 (0.31–1.13)
Hormone drug use (past month)   
   no 1.00 1.00
   yes 0.41 (0.24–0.71) 0.44 (0.25–0.78)
Ever had Pap test   
   yes 1.00 1.00
   no 3.19 (1.52–6.68) 2.82 (1.39–5.72)
  1. * refers to women reporting yes to question on ever having had a mammogram in 1994–95 survey and no in 1996–97 survey; comparison group represents women reporting yes in both surveys
  2. † obtained from multivariate logistic regression model, adjusted for all variables listed in table; other variables examined but not found to be significant predictors of inconsistent ever/never responses were: rural residence, place of birth, language, marital status and having a regular physician