The Association between Female Reproductive Factors and Open-Angle Glaucoma in Korean Women: The Korean National Health and Nutrition Examination Survey V

Table 1

Descriptive statistics for demographics and clinical characteristics of the study participants.

	Open-angle glaucoma ()	Non-open-angle glaucoma ()	value
Age, years	62.7 ± 0.8	55.8 ± 0.2	<0.001^a
Age at menarche, years
≤12 years (%)	5.5 ± 1.8	5.8 ± 0.4	0.224^a
13–16 years (%)	58.4 ± 3.1	63.7 ± 0.9
≥17 years (%)	36.1 ± 2.9	30.5 ± 0.8
Age at menopause, years	49.0 ± 0.3	48.7 ± 0.1	0.700^b
Early menopause (<45 years) (%)	19.1 ± 3.1	13.2 ± 0.7	0.033^a
Natural menopause (%)	90.2 ± 2.0	85.8 ± 0.7	0.07^a
Parity	5.0 ± 0.1	4.3 ± 0.0	0.013^b
Reproductive years, years	32.8 ± 0.4	32.7 ± 0.1	0.898^b
Hypertension (%)	53.8 ± 3.4	35.7 ± 0.8	<0.001^a
Diabetes mellitus (%)	20.4 ± 2.8	10.5 ± 0.5	<0.001^a
Oral contraceptives use (ever, %)	16.0 ± 2.3	17.7 ± 0.6	0.515^a
≥3 years (%)	23.0 ± 7.0	21.9 ± 1.6	0.882^a
Hormone replacement (ever, %)	9.9 ± 1.9	10.9 ± 0.5	0.625^a
Myopia (%)	26.6 ± 2.9	23.0 ± 0.7	0.209^a
Body mass index	23.9 ± 0.2	24.0 ± 0.1	0.545^b
Lactation (ever, %)	85.1 ± 2.6	82.5 ± 0.6	0.355^a

Values are presented as weighted mean ± standard error. value is calculated by the chi-square test^a or independent t-test^b within the complex sample analysis method.