| Variables | Exposed N = 121 | Non-exposed N = 221 | RR (IC 95%) | P value |
| n (%) | n (%) |
| ||
| Hemoglobin (g/dl) |
|
|
|
|
| <10.5 | 56 (46.3) | 66 (29.9) | 1.55 (0.97 - 2.31), | 0.003 |
| ≥10.5 | 65 (53.7) | 155 (70.1) | 0.76 (0.48 - 1.21) | |
| MCH1(pg) |
|
|
|
|
| <24 | 15 (12.4) | 21 (9.5) | 1.31 (0.65 - 2.63) | 0.406 |
| 24 - 37 | 193 (87.3) | 102 (84.3) | 0.96 (0.52 - 1.79) | 0.437 |
| ≥37 | 4 (3.3) | 7 (3.2) | 1.05 (0.30 - 3.63) | 0.945 |
| MCHC2 (g˚/dl) |
|
|
|
|
| ˂32 | 76 (62.8) | 135 (61.1) | 1.03 (0.65 - 1.62) | 0.754 |
| 32 - 36 | 32 (26.4) | 63 (28.5) | 0.93 (0.56 - 1.52) | 0.684 |
| ≥36 | 13 (10.7) | 23 (10.4) | 1.04 (0.51 - 2.11) | 0.923 |
| Hematocrit (%) |
|
|
|
|
| <34 | 61 (50.4) | 86 (38.9) | 1.29 (0.83 - 2.03) | 0.041 |
| ≥34 | 60 (49.6) | 135 (61.1) | 0.81 (0.52 - 1.27) | |
| MGV3 (fl) |
|
|
|
|
| <80 | 18 (14.9) | 28 (12.7) | 1.18 (0.62 - 1.64) | 0.568 |
| 80 - 100 | 86 (71.1) | 155 (70.1) | 1.01 (0.62 - 1.64) | 0.856 |
| ≥100 | 17 (14.0) | 38 (17.2) | 0.82 (0.44 - 1.51) | 0.450 |
| White blood cells (C/mm3) |
|
|
|
|
| <15,000 | 108 (89.3) | 209 (94.6) | 0.94 (0.41 - 2.13) | 0.076 |
| ≥15,000 | 12 (10.7) | 13 (10.7) | 1.88 (0.83 - 4.25) |
|
| Platelets (˚C/mm3) |
|
|
|
|
| <150,000 | 19 (15.7) | 56(25.3) | 0.62 (0.35 - 1.11) | 0.549 |
| 15,000 - 450,000 | 99 (81.8) | 164 (74.2) | 1.10 (0.64 - 1.92) | 0.112 |
| ≥450,000 | 3 (2.5) | 1(0.5) | 5.62 (0.57 - 53.11) | 0.138 |