From: Apolipoprotein E polymorphism and the risk of intracranial aneurysms in a Chinese population
Variable | Cases | E2/E2 | E2/E3 | E2/E4 | E3/E3 | E3/E4 | E4/E4 | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
n (%) | P | n (%) | P | n (%) | P | n (%) | P | n (%) | P | n (%) | P | ||
Site of aneurysm (%) | 150 | 9(6.0) | Â | 35(23.3) | Â | 4(2.7) | Â | 76(50.7) | Â | 25(16.7) | Â | 1(0.6) | Â |
 ACA | 67 | 4(6.0) | 0.99 | 16(23.9) | 0.95 | 2(3.0) | 0.90 | 33(49.2) | 0.91 | 11(16.4) | 0.97 | 1(1.5) | 0.57 |
 ICA | 53 | 3(5.7) | 0.93 | 12(22.6) | 0.94 | 1(1.9) | 0.76 | 28(52.8) | 0.88 | 9(17.0) | 0.97 | 0(0) | 0.97 |
 MCA | 30 | 2(6.7) | 0.90 | 7(23.3) | 1.00 | 1(3.3) | 0.84 | 15(50.0) | 0.97 | 5(16.7) | 1.00 | 0(0) | 0.76 |
Shape of aneurysm (%) | 150 | 9(6.0) | Â | 35(23.3) | Â | 4(2.7) | Â | 76(50.7) | Â | 25(16.7) | Â | 1(0.6) | Â |
 Saccular | 119 | 5(4.2) | 0.53 | 27(22.7) | 0.92 | 2(1.7) | 0.60 | 64(53.8) | 0.78 | 20(16.8) | 0.98 | 1(0.8) | 0.87 |
 Fusiform | 24 | 3(12.5) | 0.30 | 6(25.0) | 0.89 | 1(4.1) | 0.70 | 10(41.7) | 0.63 | 4(16.7) | 1.00 | 0(0) | 0.66 |
 Dissecting | 7 | 1(14.3) | 0.44 | 2(28.6) | 0.81 | 1(14.3) | 0.16 | 2(28.6) | 0.48 | 1(14.3) | 0.89 | 0(0) | 0.26 |
Size of aneurysm (%) | 150 | 9(6.0) | Â | 35(23.3) | Â | 4(2.7) | Â | 76(50.7) | Â | 25(16.7) | Â | 1(0.6) | Â |
 Small (<15 mm) | 106 | 4(3.8) | 0.45 | 26(24.5) | 0.86 | 3(2.8) | 0.94 | 54(50.9) | 0.98 | 18(17.0) | 0.96 | 1(1.0) | 0.81 |
 Larger (15–25 mm) | 37 | 4(10.8) | 0.35 | 7(18.9) | 0.64 | 1(2.7) | 0.99 | 19(51.4) | 0.97 | 6(16.2) | 0.96 | 0(0) | 0.86 |
 Giant (>25 mm) | 7 | 1(14.3) | 0.44 | 2(28.6) | 0.81 | 0(0) | 0.60 | 3(42.8) | 0.81 | 1(14.3) | 0.89 | 0(0) | 0.26 |
The Fisher Grade | 150 | 9(6.0) | Â | 35(23.3) | Â | 4(2.7) | Â | 76(50.7) | Â | 25(16.7) | Â | 1(0.6) | Â |
 Grade 1 | 14 | 1(7.1) | 0.87 | 3(21.4) | 0.90 | 0(0) | 0.93 | 8(57.2) | 0.80 | 2(14.3) | 0.53 | 0(0) | 0.45 |
 Grade 2 | 74 | 5(6.8) | 0.84 | 18(24.3) | 0.90 | 2(2.7) | 0.99 | 35(47.3) | 0.78 | 13(17.6) | 0.89 | 1(1.3) | 0.62 |
 Grade 3 | 44 | 2(4.5) | 0.73 | 10(22.7) | 0.95 | 2(4.5) | 0.55 | 23(52.3) | 0.92 | 7(15.9) | 0.92 | 0(0) | 0.94 |
 Grade 4 | 18 | 1(5.5) | 0.94 | 4(22.2) | 0.93 | 0(0) | 0.95 | 10(55.6) | 0.83 | 3(16.7) | 1.00 | 0(0) | 0.55 |