Table 3.

Univariate analyses of factors associated with PCO.

Variable	PCO (n=108)	Non-PCO (n=544)	χ 2	p value
Sex
Male	46	276
Female	62	68	2.39	0.122
Age at the time of surgery
>60 years old	32	401
<60 years old	76	143	78.504	<0.001
Cataract duration
>3 years	79	390
<3 years	29	154	0.064	0.8
History of smoking
Yes	30	161
No	78	383	0.144	0.705
History of drinking
Yes	26	134
No	82	410	0.015	0.902
History of hypertension
Yes	52	287
No	56	257	0.767	0.381
History of diabetes
Yes	27	88
No	81	456	4.829	0.028
History of immune diseases
Yes	16	46
No	92	498	4.234	0.04
High myopia
Yes	13	31
No	95	513	5.753	0.016
Family history of cataract
Yes	33	175
No	75	369	0.108	0.742
Lens nucleus hardness
I grade	7	70
II grade	22	145
III grade	38	183
IV grade	33	130
V grade	8	16	11.046	0.026
Surgery type
ECCE	18	37
Phaco	90	507	11.354	0.001
History of vitrectomy
Yes	23	74
No	85	470	4.212	0.04
Ocular inflammation (aqueous cell)
>15 cells	38	126
<15 cells	70	418	6.01	0.009
IOL materials
Hydrophilic	67	253
Hydrophobic	41	291	8.696	0.003