Prevalence of Heterophoria in Tibetan Grade-One Students: The Lhasa Childhood Eye Study

Table 2

Characteristics of participants (n = 1852).

Characteristics	Mean ± SD	Median	Range
Age, years	6.82 ± 0.46	6.78	6–10
Gender, male, n (%)	981 (52.97%)
Ethnic categories, n (%)
Tibetan	1758 (94.92%)
Han	85 (4.59%)
Others	9 (0.49%)
Height, cm	120.55 ± 5.52	120.00	103.00–168.00
Weight (kg)	22.96 ± 3.69	22.00	12.00–45.00
BMI (kg/m^2)	15.74 ± 1.80	15.45	9.23–27.47