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Table 3 Sensitivity, specificity, exact agreement, and Cohen’s kappa for oncological treatment variables in the registry

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

 

Sensitivity

(95% CI)

Specificity

(95% CI)

Exact agreement

(95% CI)

Kappa

(95% CI)

Chemotherapy

88.6%

(84.2–91.9%)

95.2%

(92.9–96.8%)

92.8%

(90.8–95.0%)

0.84

(0.80–0.88)

Endocrine

therapy

88.1%

(84.7–90.9%)

94.2%

(91.0–97.0%)

90.7%

(88.4–92.6%)

0.81

(0.77–0.85)

Anti-HER2

therapy

73.7%

(49.0–91.0%)

99.2%

(98.2–99.6%)

98.5%

(97.4–99.2%)

0.71

(0.55–0.87)

Radiotherapy

94.7%

(92.6–96.2%)

88.5%

(82.0–92.6%)

93.4%

(91.4–95.0%)

0.81

(0.76–0.86)