Table 2. Sensitivity and specificity value of the teachers with various levels of gold standards.

Gold standards	Sensitivity	Specificity
Participants	(95% confidence interval)	(95% confidence interval)
Gold Standard 1: Screening results from the professionals
Pre-primary school teachers	25% (23% to 27%)	98% (97% to 99%)
Primary school teachers	59% (57% to 61%)	98%
Gold Standard 2: Refractive error identified by pediatric ophthalmologist after screening by professionals
Pre-primary school teachers	28% (26% to 30%)	98% (97% to 99%)
Primary school teachers	60% (58% to 62%)	97%
Gold Standard 3: Clinically significant refractive error identified by pediatric ophthalmologist after screening by professionals
Pre-primary school teachers	35% (33% to 37%)	98% (97% to 99%)
Primary school teachers	65% (63% to 67%)	97%