95% CI for sensitivity and specificity by number of participants to justify the sample size of 2000 participants for the Smartphone Monitoring for Atrial Fibrillation in Real-Time in India (Smart-India)study (assumes 5% prevalent atrial fibrillation)
| Number of participants | 500 | 1000 | 2000 | 5000 |
| Sensitivity (0.9) | 0.69 to 0.97 | 0.78 to 0.97 | 0.82 to 0.95 | 0.86 to 0.93 |
| Specificity (0.9) | 0.87 to 0.93 | 0.88 to 0.92 | 0.89 to 0.91 | 0.89 to 0.91 |