Lhasa childhood eye study: the rationale, methodology, and baseline data of a 5 year follow-up of school-based cohort study in the Tibetan plateau region of Southwest China

Table 1 Characteristics of participants who attended baseline LCES (N = 1856)

Characteristics	Mean ± SD	Median	Range
Age, years	6.83 ± 0.46	6.78	5.89–10.32
Gender, male, n (%)	984 (53.02%)
Ethnic categories, n (%)
Tibetan	1762 (94.93%)
Han	85 (4.58%)
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/m²	15.74 ± 1.80	15.45	9.23–27.47
IOP, mm Hg	16.02 ± 2.73	16.00	8.00–26.00

Data presented are mean ± SD or frequency (%), where appropriate
BMI body mass index, IOP intraocular pressure, LCES Lhasa Childhood Eye Study

ISSN: 1471-2415