Table 2.
Levels of blood, bone density and lung function parameters in adult population from Qiliying and Langgongmiao in Xinxiang (n = 1024)
| Characteristics | Exposure region (n = 611) | Reference region (n = 413) | P-value |
|---|---|---|---|
| Lung function parameters | |||
| FVC (L) | 3.12 ± 0.63 | 3.30 ± 0.78 | 0.000a |
| FEV1 (L) | 2.64 ± 0.57 | 2.72 ± 0.61 | 0.044a |
| FEV1 / FVC (%) | 0.84 (0.80, 0.88) | 0.83 (0.81, 0.85) | 0.000b |
| Bone density parameters | |||
| Bone Mineral Density (BMD) | 0.484 ± 0.06 | 0.488 ± 0.06 | 0.324a |
| BMD T-scores | −0.029 ± 0.896 | − 0.049 ± 1.003 | 0.730a |
| BMD Z-scores | 0.899 ± 1.212 | 0.919 ± 1.327 | 0.803a |
| Blood parameters | |||
| Red blood cell count, n (1012/L) | 4.82 ± 0.47 | 4.88 ± 0.47 | 0.068a |
| White blood cell count, n (109/L) | 6.01 ± 1.50 | 6.05 ± 1.47 | 0.728a |
| Hemoglobin (g/L) | 142.98 ± 17.43 | 142.69 ± 16.84 | 0.791a |
| MCH | 29.65 ± 2.27 | 29.26 ± 2.19 | 0.007a |
| MCHC | 322.70 ± 15.47 | 318.00 ± 17.74 | 0.000 a |
| Hematocrit (%) | 44.27 ± 4.76 | 44.86 ± 4.67 | 0.049 b |
| Platelet count (109/L) | 239.19 ± 58.61 | 252.28 ± 64.05 | 0.001 a |
| Thrombocytocrit (%) | 0.26 (0.22, 0.30) | 0.28 (0.23, 0.32) | 0.001b |
| RDW-SD (fL) | 13.10 (12.70, 13.60) | 13.20 (12.80, 13.80) | 0.178c |
| RDW-CV (%) | 43.0 (41.0, 45.0) | 43.0 (41.0, 46.0) | 0.043b |
Exposure region: Qiliying; Reference region: Langgongmiao. Abbreviation, FVC: forced vital capacity; FEV1: forced expiratory volume in 1 s; BMD: Bone Mineral Density; BMI: body mass index; MCH: mean corpuscular hemoglobin; MCHC: mean corpuscular hemoglobin concentration; RDW: red blood cell distribution width. #: 0.05 < p < 0.10; *: p < 0.05, **: p < 0.01