Table 4.
Stratified analysis by selected characteristics: Agreement between OC prescription fills in automated data and self-reported (SR) OC use from 0–5 years prior to reference date among women enrolled for at least 5 years.
| Characteristic | Total Numbera | SR OC use (N) | SR OC use (%) | OC fills (N) | OC fills (%) | % observed agreement | K (95% CI) | PABAK (95% CI) |
|---|---|---|---|---|---|---|---|---|
| No history of fracture (control) | 844 | 68 | 8 | 82 | 10 | 0.94 | 0.63 (0.54–0.73) | 0.88 (0.85–0.91) |
| History of fracture (case) | 555 | 38 | 7 | 50 | 9 | 0.95 | 0.59 (0.46–0.72) | 0.87 (0.83–0.91) |
|
| ||||||||
| Health Excellent/Very good | 892 | 71 | 8 | 86 | 10 | 0.94 | 0.63 (0.53–0.73) | 0.88 (0.85–0.91) |
| Health Good/Fair/Poor | 507 | 35 | 7 | 54 | 11 | 0.93 | 0.60 (0.46–0.73) | 0.87 (0.83–0.91) |
|
| ||||||||
| Married or living with a partner | 1032 | 83 | 8 | 107 | 10 | 0.94 | 0.63 (0.54–0.72) | 0.88 (0.85–0.91) |
| Not partnered, divorced, widowed | 367 | 23 | 6 | 33 | 9 | 0.94 | 0.58 (0.40–0.75) | 0.88 (0.83–0.93) |
|
| ||||||||
| 1 or more Pregnancies | 1043 | 75 | 7 | 100 | 10 | 0.94 | 0.61 (0.51–0.70) | 0.88 (0.85–0.91) |
| No Pregnancy | 354 | 31 | 9 | 40 | 11 | 0.94 | 0.64 (0.50–0.78) | 0.87 (0.82–0.92) |
|
| ||||||||
| Some college to post graduate degree | 1219 | 93 | 8 | 122 | 10 | 0.94 | 0.63 (0.55–0.71) | 0.88 (0.85–0.91) |
| High school graduate, GED or less education | 179 | 13 | 7 | 18 | 10 | 0.93 | 0.54 (0.30–0.78) | 0.85 (0.78–0.93) |
|
| ||||||||
| White/Caucasian | 1167 | 93 | 8 | 122 | 10 | 0.93 | 0.61 (0.52–0.69) | 0.87 (0.84–0.90) |
| Non–white | 226 | 13 | 6 | 18 | 8 | 0.96 | 0.69 (0.49–0.89) | 0.92 (0.87–0.97) |
|
| ||||||||
| Usually fill at a GH pharmacy | 1237 | 100 | 8 | 130 | 11 | 0.94 | 0.62 (0.54–0.70) | 0.87 (0.84–0.90) |
| Always fill at a GH pharmacy | 162 | 6 | 4 | 10 | 6 | 0.96 | 0.61 (0.30–0.92) | 0.93 (0.87–0.98) |
|
| ||||||||
| LE 52 years at refdate | 412 | 45 | 11 | 60 | 15 | 0.93 | 0.68 (0.57–0.80) | 0.86 (0.81–0.91) |
| GT 52 years at refdate | 987 | 61 | 6 | 80 | 8 | 0.94 | 0.57 (0.46–0.67) | 0.88 (0.86–0.91) |
|
| ||||||||
| No use of other hormone containing RX | 1047 | 84 | 8 | 106 | 10 | 0.95 | 0.68 (0.59–0.76) | 0.89 (0.87–0.92) |
| Used other hormone containing RX | 350 | 21 | 6 | 30 | 9 | 0.91 | 0.40 (0.20–0.61) | 0.83 (0.77–0.89) |
PABAK Prevalence Adjusted and Bias Adjusted Kappa (bold represents statistically significant difference at α ≤ 0.05). K unadjusted Kappa. SR self report. OC oral contraceptive. CI 95% confidence interval. RX Medications.
a
Total numbers of stratified groups may not sum to 1399 due to missing data in the stratification variable.