Table 2 Kappa value for selected questions
From: Reliability and accuracy of interview data in non-smoking female lung cancer case-control study
| Â | Total number of disagreement | Observed agreement (%) | Kappa |
|---|---|---|---|
History of illness | 13 | 88.39 | 0.75 |
Family history of cancer | 3 | 97.32 | 0.92 |
Oral contraceptive use | 12 | 89.29 | 0.56 |
Location of kitchen during Childhood | 12 | 89.29 | 0.78 |
History of passive smoking | 1 | 99.11 | 0.92 |