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Table 5 Agreement in timing of recurrence events between registry and medical records

From: Validation of primary and outcome data quality in a Swedish population-based breast cancer quality registry

 

Exact

agreement

(95% CI)

Agreement

± 30 days

(95% CI)

Agreement

± 90 days

(95% CI)

Date of first recurrence of any type

24.4%

(20.0–29.4%)

67.0%

(61.6–71.9%)

87.2%

(83.0–90.5%)

Date of first local recurrence

27.9%

(19.8–37.7%)

71.2%

(61.3–79.4%)

93.3%

(86.1–97.0%)

Date of first regional recurrence

17.4%

(5.7–39.5%)

56.5%

(34.9–76.1%)

91.3%

(70.5–98.5%)

Date of first distant recurrence

25.5%

(19.9–32.0%)

68.9%

(62.1–74.9%)

87.3%

(81.8–91.3%)