Mean Platelet Volume in Patients with Nonarteritic Anterior Ischemic Optic Neuropathy

Table 1

The demographic and clinical features of the NAION and control groups.

	NAION	Control		Power estimated (%)
Age (year)	57.3 ± 9.1	55.7 ± 13.2	0.2
Gender (M/F)	23/23	39/51	0.1
HT	6/46	8/90	0.5
DM	6/46	16/90	0.5
HT and DM	7/46	15/90	0.5
Hb (g/dL)	14.1 ± 1.4	13.8 ± 1.3	0.2	33.2
Hct (%)	42.4 ± 4	41.3 ± 3	0.2
Plt (10^3/µL)	263.7 ± 67.5	264.3 ± 57.8	0.76	5.6
MPV (fL)	8.25 ± 1.26	7.64 ± 1.01	<	88.6
IOP (mm Hg)	15.8 ± 3.4	14.1 ± 2.0	<	93.1
VA (LogMAR)	1.19 ± 0.94	0.09 ± 0.2	<
CRP (mg/L)	0.46 ± 0.4	0.50 ± 0.3	0.78
ESR (mm/hour)	11.8 ± 7.7	12.0 ± 8.8	0.88

NAION: nonarteritic anterior ischemic optic neuropathy, HT: hypertension, DM: diabetes mellitus, Hb: hemoglobin, Hct: hematocrit, Plt: platelet count, MPV: mean platelet volume, IOP: intraocular pressure, VA: visual acuity, CRP: c-reactive protein, and ESR: erythrocyte sedimentation rate.
Chi-square test
Mann-Whitney test
-test.