Table 1. Level of agreement (Kappa statistic) between EPs and NPHWs on past medical history and health behaviour sections of the WHO CVD-Risk Management Package.
| Variable | Inter-rater agreement, Po (%) | Kappa statistic |
Comments | |||
|---|---|---|---|---|---|---|
| (Po – Pe)/(1 – Pe) Kappa | Prob > z | |||||
| Patient’s cardiovascular history | ||||||
| Sex | 97.75 | 0.9023 | 0.000 | Perfect | ||
| Heart attack | 99.53 | 0.7977 | 0.000 | Substantial | ||
| Angina | 90.22 | 0.6182 | 0.000 | Substantial | ||
| Diabetes | 97.67 | 0.8328 | 0.000 | Perfect | ||
| Transient ischaemic attack | 98.44 | 0.5376 | 0.000 | Moderate | ||
| Stroke | 99.38 | 0.3306 | 0.000 | Fair | ||
| Health/risk behaviour | ||||||
| Tobacco | 89.88 | 0.7480 | 0.000 | Substantial | ||
| Physical activity | 78.90 | 0.5744 | 0.000 | Moderate | ||
| Eating less salt | 83.13 | 0.6624 | 0.000 | Substantial | ||
| Fruits | 92.50 | 0.3287 | 0.000 | Fair | ||
| Fish | 97.97 | 0.2294 | 0.000 | Fair | ||
| Fatty foods | 74.14 | 0.4560 | 0.000 | Moderate | ||
| Alcohol | 93.69 | 0.7733 | 0.000 | Substantial | ||
CVD, cardiovascular disease; EPs, expert physicians; NPHWs, non-physician health-care workers.