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. Author manuscript; available in PMC: 2018 Jul 4.
Published in final edited form as: Ophthalmic Epidemiol. 2008 Jan-Feb;15(1):17–23. doi: 10.1080/09286580701772011

Table 1.

Distribution of Enumerated and Examined Populations by Age, Gender, Grade, Parental Education and Ethnicity

Age (yrs)* Enumerated Population
No.
(%)
Percent
Examined
Examined
Population
No. (%)
 10 431 (9.6)   94.0 405 (9.5)  
 11 634 (14.1) 95.7 607 (14.2)
 12 917 (20.4) 94.7 868 (20.3)
 13 1023 (22.7)   96.3 985 (23.0)
 14 920 (20.4) 95.4 878 (20.5)
 15 576 (12.8) 93.6 539 (12.6)
Gender
 Male 2409 (53.5)   94.6 2278 (53.2)  
 Female 2092 (46.5)   95.8 2004 (46.8)  
Grade
 5th 886 (19.7) 93.9 832 (19.4)
 6th 853 (19.0) 95.0 810 (18.9)
 7th 896 (19.9) 96.0 860 (20.1)
 8th 946 (21.0) 96.0 908 (21.2)
 9th 920 (20.4) 94.8 872 (20.4)
Parental Education
 None 100 (2.2) 90.0 90 (2.1)
 Primary 142 (3.2) 91.6 130 (3.0)  
 Secondary 300 (6.7) 95.3 286 (6.7)  
 Higher Secondary 1732 (38.5) 95.2 1649 (38.5)  
 Graduate 2224 (49.4) 95.5 2124 (49.6)  
 Missing     3 (0.1) 100.0     3 (0.1)
Ethnicity
 Aryan 2247 (49.9) 94.7 2128 (49.7)  
 Mongol 2016 (44.8) 95.6 1927 (45.0)  
 Tibetan 197 (4.4) 95.4 188 (4.4)  
 Other   41 (0.9) 95.1 39 (0.9)
All   4501 (100.0) 95.1 4282 (100.0)
*

Twenty-five children of age 9 were grouped with age 10, and 78 children of age 16 were grouped with age 15.