Phase I results
| Overall | USA (N=8) | UK (N=8) | Asia (N=5) | Asia vs rest | |
| Sensitivity (95% CI) | 44% (40% to 49%) | 33% (26% to 41%) | 40% (32% to 48%) | 71% (61% to 79%) | p<0.05 |
| Specificity (95% CI) | 92% (89% to 95%) | 92% (86% to 96%) | 95% (90% to 98%) | 89% (81% to 94%) | NS |
| Interobserver agreement (κ) | 0.23 | 0.16 | 0.16 | 0.52 |
NS, non-significant.