Association between Serum Potassium with Risk of Onset and Visual Field Progression in Patients with Primary Angle Close Glaucoma: A Cross-Sectional and Prospective Cohort Study

Table 1

Comparison of characteristics in primary angle close glaucoma and normal subjects.

Variable	Control group ()	PACG group ()	value	value
Age (year),			-0.56	0.57^a
Sex (male, %)	49, 29.52%	92, 34.72%	1.25	0.26^b
BMI (kg/m^2),			0.85	0.40^a
Diabetes, (%)	8 (4.82%)	20 (7.55%)	1.25	0.26^b
Hypertension, (%)	38 (22.89%)	54 (20.38%)	0.38	0.54^b
Topical glaucoma medications
0-2		94 (35.47%)
>2		171 (64.53%)
IOP (mm Hg),
VCDR,
CCT (mm),
ACD (cm),
AL (cm),
MD (dB),
Calcium (mmol/L)			-0.50	0.62^a
Male			-0.60	0.55^a
Female			-0.20	0.84^a
Phosphorus (mmol/L)			-1.51	0.13^a
Male			-1.31	0.19^a
Female			-1.65	0.10^a
Potassium (mmol/L)			-4.28	<0.001^a
Male			-2.38	0.02^a
Female			-3.44	0.001^a
Sodium (mmol/L)			1.33	0.18^a
Male			0.42	0.68^a
Female			1.28	0.20^a
Chlorine (mmol/L)			3.36	0.001^a
Male			1.27	0.21^a
Female			3.10	0.002^a

^aIndependent sample -test. ^b test. ^cMann-Whitney test.