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

Table 2

Comparison of treatment, recurrence, and menopausal information obtained from medical records and self-administered questionnaire in women with breast cancer.

From medical records			From treatment questionnaire
	Frequency (𝑛=939)	Percent (%)		Frequency (𝑛=939)	Percent (%)
Hormone given			Hormone taken
No	426	45.4	No	434	46.8
Yes	513	54.6	Yes	491	52.9
Tamoxifen			Tamoxifen
Yes	468	91.2	Yes	441	89.8
No	45	8.8	No	50	10.2
Megestrol			Megestrol
Yes	16	3.1	Yes	5	1.0
No	497	96.9	No	486	99.0
Anastrozole			Anastrozole
Yes	67	13.1	Yes	16	3.3
No	446	86.9	No	475	96.7
MA12			MA12
Yes	22	4.3	Yes	5	1.0
No	491	95.7	No	486	99.0
Don’t know	0	0	Don’t know	3	0.3
Missing	0	0	Missing	11	n/a
Chemotherapy given			Chemotherapy taken
No	439	46.8	No	408	43.7
Yes	500	53.2	Yes	525	56.3
Epirubicin			Epirubicin
Yes	188	37.6	Yes	113	21.5
No	312	62.4	No	412	78.5
Doxorubicin			Doxorubicin
Yes	148	29.6	Yes	84	16.0
No	352	70.4	No	441	84.0
Methotrexate			Methotrexate
Yes	213	42.6	Yes	121	23.0
No	287	57.4	No	404	77.0
Cyclophosphamide			Cyclophosphamide
Yes	495	99.0	Yes	307	58.5
No	5	1.0	No	218	41.5
Fluorouracil			Fluorouracil
Yes	430	86.0	Yes	260	49.5
No	70	14.0	No	265	50.5
Docetaxel			Docetaxel
Yes	59	11.8	Yes	5	0.9
No	441	88.2	No	520	99.1
Don’t know	0	0.0	Don’t know	0	0.0
Missing	0	n/a	Missing	6	n/a
Radiation given			Radiation taken
No	223	23.8	No	209	22.4
Yes	712	76.2	Yes	724	77.6
Don’t know	0	0.0	Don’t know	0	0.0
Missing	4	n/a	Missing	6	n/a
Surgery given			Received surgery
No	3	99.9	No	3	99.7
Yes	936	0.1	Yes	933	0.3
Don’t know	0	0.0	Don’t know	0	0.0
Missing	0	n/a	Missing	3	n/a
Mastectomy			Mastectomy
Yes	289	30.7	Yes	288	30.7
No	650	69.3	No	651	69.3
Lumpectomy			Lumpectomy
Yes	645	68.7	Yes	695	74.0
No	294	31.3	No	244	26.0
Other treatment			Other treatment
No	929	99.9	No	215	22.9
Yes	0	0.0	Yes	727	77.1
Don’t know	1	0.1	Don’t know	0	0.0
Missing	9	n/a	Missing	0	n/a
Breast cancer recurrence			Breast cancer recurrence
No	889	94.7	No	865	93.4
Yes	50	5.3	Yes	61	6.6
Don’t know	0	0.0	Don’t know	0	0.0
Missing	0	n/a	Missing	13	n/a
Menopausal status			Menopausal status
Premenopausal	520	55.4	Premenopausal	518	55.2
Postmenopausal	248	26.4	Postmenopausal	242	25.8
Unknown/missing	171	18.2	Unknown/missing	179	19.0