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).

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)

* 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

† 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