Table 2.

Comparison of platelet parameters in subjects with POAG, stratified according to gender and age.

Subgroups	POAG (n=402)	Control (n=408)	T-value	p value
PLT (10 9 /L)
Male
<50 (n=131, 129)	210.18 ± 52.23	227.53 ± 53.51	−2.614	0.009
≥50 (n=137, 129)	190.62 ± 47.83	203.81 ± 51.53	−2.107	0.036
Female
<50 (n=52, 69)	227.19 ± 58.51	234.32 ± 53.53	−0.671	0.504
≥50 (n=82, 81)	206.73 ± 48.66	222.64 ± 48.95	−2.048	0.042
PDW (fL)
Male
<50	13.95 ± 2.99	11.70 ± 2.30	6.712	<0.001
≥50	13.63 ± 3.28	11.76 ± 2.42	5.190	<0.001
Female
<50	13.84 ± 3.52	12.40 ± 2.80	2.349	0.021
≥50	13.63 ± 3.05	11.63 ± 2.35	4.639	<0.001
PCT (%)
Male
<50	0.22 ± 0.04	0.23 ± 0.05	−1.373	0.171
≥50	0.20 ± 0.05	0.20 ± 0.05	−0.601	0.548
Female
<50	0.24 ± 0.06	0.24 ± 0.06	−0.433	0.666
≥50	0.21 ± 0.05	0.22 ± 0.04	2.293	0.296
MPV (fL)
Male
<50	10.54 ± 1.38	10.09 ± 1.01	2.921	0.004
≥50	10.40 ± 1.34	10.07 ± 1.05	2.207	0.028
Female
<50	10.68 ± 1.20	10.23 ± 1.00	2.151	0.034
≥50	10.47 ± 1.14	10.06 ± 1.13	2.293	0.023
P-LCR (%)
Male
<50	27.67 ± 9.22	25.66 ± 8.10	1.530	0.128
≥50	27.65 ± 8.52	25.70 ± 8.18	1.585	0.114
Female
<50	26.42 ± 9.67	28.25 ± 9.50	−0.848	0.399
≥50	27.99 ± 9.88	25.81 ± 8.64	1.280	0.203

Independent-samples T-test and χ² test were used. Data are expressed as mean ± SD. POAG: primary open-angle glaucoma; PLT: platelet count; PDW: platelet distribution width; PCT: plateletcrit; MPV: mean platelet volume; P-LCR: platelet large cell ratio.