Table 4: Characteristics of the individual and total studies examined the association between acute ischemic stroke and PON1 gene Q192R polymorphism in Turkish population.
| 
 Study  | 
 Region  | 
 Q192R  | 
 Patients  | 
 Controls  | 
 p  | 
 OR (CI 95%)  | 
|
| 
 Aydin et al., 2006 (24)  | 
 İstanbul  | 
 Genotypes  | 
|||||
| 
 QQ : QR : RR  | 
 14 (21.5) : 40 (61.5) : 11 (16.9)  | 
 38 (45.2) : 35 (41.7) : 11 (13.1)  | 
 0.010  | 
 -  | 
|||
| 
 QQ : QR+RR  | 
 14 (21.5) : 51 (78.5)  | 
 38 (45.2) : 46 (54.8)  | 
 0.003  | 
 0.332 (0.160-0.690)  | 
|||
| 
 QQ+QR : RR  | 
 54 (83.1) : 11 (16.9)  | 
 73 (86.9) : 11 (13.1)  | 
 0.514  | 
 0.740 (0.299-1.832)  | 
|||
| 
 Alleles  | 
|||||||
| 
 Q : R  | 
 68 (52.3) : 62 (47.7)  | 
 111 (66.1) : 57 (33.9)  | 
 0.016  | 
 0.563 (0.352-0.901)  | 
|||
| 
 Demirdöğen et al., 2009 (26)  | 
 Ankara  | 
 Genotypes  | 
|||||
| 
 QQ : QR : RR  | 
 77 (44.8) : 74 (43.0) : 21 (12.2)  | 
 46 (43.8) : 50 (47.6) : 9 (8.6)  | 
 0.572  | 
 -  | 
|||
| 
 QQ : QR+RR  | 
 77 (44.8) : 95 (55.2)  | 
 46 (43.8) : 59 (56.2)  | 
 0.876  | 
 1.040 (0.638-1.695)  | 
|||
| 
 QQ+QR : RR  | 
 151 (87.8) : 21 (12.2)  | 
 96 (91.4) : 9 (8.6)  | 
 0.345  | 
 0.674 (0.296-1.533)  | 
|||
| 
 Alleles  | 
|||||||
| 
 Q : R  | 
 228 (66.3) : 116 (33.7)  | 
 142 (67.6) : 68 (32.4)  | 
 0.745  | 
 0.941 (0.653-1.356)  | 
|||
| 
 Present study  | 
 Tokat  | 
 Genotypes  | 
|||||
| 
 QQ : QR : RR  | 
 78 (72.9) : 23 (21.5) : 6 (5.6)  | 
 58 (58.6) : 36 (36.4) : 5 (5.1)  | 
 0.061  | 
 -  | 
|||
| 
 QQ : QR+RR  | 
 78 (72.9) : 29 (27.1)  | 
 58 (58.6) : 41 (41.4)  | 
 0.030  | 
 1.901 (1.060-3.411)  | 
|||
| 
 QQ+QR : RR  | 
 101 (94.4) : 6 (5.6)  | 
 94 (94.9) : 5 (5.1)  | 
 0.859  | 
 0.895 (0.264-3.032)  | 
|||
| 
 Alleles  | 
|||||||
| 
 Q : R  | 
 179 (83.6) : 35 (16.4)  | 
 152 (76.8) : 46 (23.2)  | 
 0.079  | 
 1.548 (0.948-2.526)  | 
|||
| 
 Total studies  | 
 Genotypes  | 
||||||
| 
 QQ : QR : RR  | 
 169 (49.1) : 137 (39.8) : 38 (11.0)  | 
 142 (49.3) : 121 (42.0) : 25 (8.7)  | 
 0.587  | 
 -  | 
|||
| 
 QQ : QR+RR  | 
 169 (49.1) : 175 (50.9)  | 
 142 (49.3) : 146 (50.7)  | 
 0.965  | 
 0.993 (0.726-1.358)  | 
|||
| 
 QQ+QR : RR  | 
 306 (89.0) : 38 (11.0)  | 
 263 (91.3) : 25 (8.7)  | 
 0.323  | 
 0.765 (0.450-1.302)  | 
|||
| 
 Alleles  | 
|||||||
| 
 Q : R  | 
 475 (69.0) : 213 (31.0)  | 
 405 (70.3) : 171 (29.7)  | 
 0.624  | 
 0.942 (0.740-1.198)  | 
PON1, Paraoxinase 1. The results that are statistically significant are shown in boldface.