Number of SDB symptoms	Estimated sensitivity	95% CI	Estimated specificity	95% CI
1-3	17/17 (100%)	80% - 100%	42/77 (55%)	43% - 66%
2-3	8/17 (47%)	23% - 72%	62/77 (81%)	70% - 89%
3	5/17 (29%)	10% - 56%	73/77 (95%)	87% - 99%
- An exact binomial 95% confidence interval (CI) is given for each estimated sensitivity and specificity.