Table 4. The associations between MMP-1 rs1799750 polymorphism and clinical characteristics of RCT.

Characteristics	Genotype distributions
rs1799750	CC	CT	TT	CT+TT
Tear size
Large/Medium	6/10	16/18	6/16	22/34
OR (95%CI); P-value	1.0 (reference)	1.48(0.44–5.00); 0.525	0.63(0.16–2.49); 0.503	1.08 (0.34–3.39); 0.897
Tear size
Large/Small	6/21	16/40	6/16	22/56
OR (95% CI; P-value	1.0 (reference)	1.40 (0.48–4.11); 0.539	1.31 (0.36–4.84); 0.683	1.38 (0.49–3.86); 0.545
Family history
Yes/No	3/34	6/68	3/35	9/103
OR (95% CI); P-value	1.0 (reference)	1.00 (0.24–4.25); 1.000	0.97 (0.18–5.15); 0.973	0.99 (0.25–3.87); 0.989
Pre-operative stiffness
Yes/No	12/25	39/35	22/16	61/51
OR (95% CI); P-value	1.0 (reference)	2.32 (1.02–5.30); 0.043	2.87 (1.12–7.35); 0.027	2.49 (1.14–5.45); 0.020

Bold values are statistically significant (P<0.05).