Research Article

Accuracy of Self-Reported Breast Cancer Information among Women from the Ontario Site of the Breast Cancer Family Registry

Table 4

Odds ratios (ORs) and 95% confidence intervals (CIs) for factors potentially associated with agreement between questionnaire and medical record information for broad categories of treatment, menopausal status and specific types of hormonal therapy in 939 women with breast cancer.

Hormonal therapy
Chemotherapy
Radiation therapy2Menopuasal status
Tamoxifen
MegestrolAnastrozole
OR1 (95% CI)OR1 (95% CI)OR1 (95% CI)OR1 (95% CI)OR1 (95% CI)OR1 (95% CI)OR1 (95% CI)

Age at diagnosis11.02 (0.98, 1.06)1.02 (0.98, 1.06)1.04 (0.91, 1.20)0.92 (0.91, 0.94)1.04 (0.99, 1.09)1.03 (0.91, 1.16)1.01 (0.96, 1.05)
Recall period10.88 (0.73, 1.06)0.93 (0.77, 1.14)1.12 (0.71, 1.76)0.96 (0.85, 1.08)1.04 (0.82, 1.31)1.79 (0.82, 3.92)1.17 (0.91, 1.50)
Marital status (yes versus no)
1.95 (1.12, 3.40)1.37 (0.72, 2.60)0.47 (0.10, 2.16)0.69, (0.40, 0.87)1.02 (0.51, 2.06)0.46 (0.05, 4.21)1.35 (0.71, 2.58)
English speaking (yes versus no)
1.26 (0.60, 2.64)1.55 (0.74, 3.25)1.99 (0.52, 7.61)0.03 (0.57, 1.51)0.92 (0.35, 2.42)1.26 (0.12, 12.98)1.37 (0.58, 3.22)
Breast Cancer Recurrence (yes versus no)
0.19 (0.09, 0.34)0.20 (0.09, 0.42)1.50 (0.71, 3.20)0.28 (0.12, 0.65)0.10 (0.02, 0.44)0.24 (0.11, 0.54)
Family history (yes versus no)
0.88 (0.51, 1.50)0.86 (0.49, 1.52)3.64 (0.79, 16.75)1.11 (0.81, 1.52)1.13 (0.60, 2.14)1.45 (0.30, 6.94)1.40 (0.74, 2.62)
Alcohol consumption11.01 (0.96, 1.06)1.00 (0.96, 1.05)1.04 (0.91, 1.20)0.99 (0.96, 1.01)0.98 (0.93, 1.03)0.97 (0.87, 1.08)1.01 (0.95, 1.06)
Education level
 Bachelor/graduate1.001.001.001.001.001.001.00
 High school1.42 (0.75, 2.68)0.52 (0.24, 1.12)1.27 (0.30, 5.42)0.84 (0.56, 1.27)1.29 (0.60, 2.79)0.86 (0.12, 5.97)1.14 (0.52, 2.50)
 Some vocational/college1.64 (0.85, 2.68)0.57 (0.27, 1.21)1.07 (0.28, 4.08)0.74 (0.49, 1.12)1.14 (0.53, 2.43)1.30 (0.19, 9.15)0.77 (0.37, 1.62)
Smoking status
 Never1.001.001.001.001.001.001.00
 Current0.86 (0.44, 1.68)1.27 (0.58, 2.76)0.72 (0.16, 3.20)0.63 (0.42, 0.96)0.98 (0.46, 2.11)0.14 (0.01, 1.70)0.74 (0.34, 1.62)
 Former1.25 (0.67, 2.32)0.77 (0.42, 1.41)0.51 (0.16, 1.68)0.77 (0.54, 1.10)1.80 (0.84, 3.83)0.11 (0.01, 1.05)0.69 (0.35, 1.33)
Menopausal status
 Premenopausal1.001.001.001.001.001.00
 Postmenopausal0.62 (0.27, 1.43)1.21 (0.50, 2.94)0.24 (0.05, 1.27)0.35 (0.13, 0.95)0.74 (0.06, 8.93)0.54 (0.21, 1.41)
 Unknown0.61 (0.28, 1.32)1.27 (0.55, 2.92)1.50 (0.16, 14.00)0.30 (0.12, 0.70)1.07 (0.08, 13.73)0.63 (0.26, 1.52)

1Variables were treated as continuous variables.
2Odds ratio (OR) adjusted for all other variables included in the table.
3Agreement analysis for radiation therapy was conducted excluding women with breast cancer recurrence (according to medical records).