Table 1. Study population characteristics and haematological trait descriptive statistics for NHANES III participants.
Unweighted means (± standard deviations) or percentages are given for demographic, plasma fibrinogen, and haematologic traits, by subpopulation for adults in phase 2 of NHANES III. Abbreviations: non-Hispanic white (NHW), non-Hispanic black (NHB), and Mexican American (MA).
| Variable | Mean or % | Standard Deviation | ||||
|---|---|---|---|---|---|---|
| NHW | NHB | MA | NHW | NHB | MA | |
| Age (yrs) | 53.4 | 40.7 | 41 | ±20 | ±16 | ±17 |
| Female (%) | 60 | 58 | 50 | - | - | - |
| Current Smokers (%) | 26 | 37 | 24 | - | - | - |
| Body Mass Index (kg/m2) | 26.6 | 28.2 | 27.7 | ±5.56 | ±6.67 | ±5.42 |
| Plasma Fibrinogen (g/L) | 2.93 | 2.95 | 2.97 | ±0.50 | ±0.51 | ±0.50 |
| Platelet Count | 252 | 271 | 266 | ±58 | ±64 | ±62 |
| Platelet Distribution Width (mean %) | 16.5 | 16.3 | 16.4 | ±0.47 | ± 0.57 | ±0.54 |
| Mean Platelet Volume (fL) | 8.43 | 8.56 | 8.57 | ± 0.92 | ±0.98 | ±0.98 |
| Ln Triglycerides (mg/dL) | 4.51 | 4.38 | 4.52 | ± 0.32 | ±0.35 | ±0.31 |
| White Blood Cell Count | 7.38 | 6.69 | 7.73 | ±2.46 | ±2.11 | ±2.08 |