Table 1.
Characteristics of study participants according to hemoglobin category
| <13.0 | Hemoglobin (g/dL) | ||||||
|---|---|---|---|---|---|---|---|
| 13.0 to <14.5 | 14.5 to <16.0 | 16.0 to <17.5 | ≥17.5 | ||||
| MCV (fL) | |||||||
| <80 | 80–90 | >90 | |||||
| Men | |||||||
| n | 51 | 152 | 272 | 6,537 | 17,440 | 6,139 | 412 |
| Age (years) | 48.5 ± 11.7 | 51.5 ± 10.6 | 53.1 ± 8.8 | 48.1 ± 10.3 | 45.5 ± 10.4 | 44.5 ± 10.5 | 46.8 ± 9.8 |
| BMI (kg/m2) | 22.6 ± 3.4 | 22.4 ± 3.0 | 22.2 ± 3.0 | 22.8 ± 2.9 | 23.6 ± 3.2 | 24.8 ± 3.7 | 26.0 ± 4.2 |
| FPG (mg/dL) | 99.3 ± 8.5 | 98.2 ± 9.4 | 97.1 ± 10.0 | 97.2 ± 9.2 | 97.4 ± 9.5 | 98.3 ± 10.2 | 98.6 ± 11.2 |
| HbA1c (%) | 5.71 ± 0.33 | 5.63 ± 0.34 | 5.44 ± 0.38 | 5.47 ± 0.30 | 5.43 ± 0.31 | 5.42 ± 0.33 | 5.44 ± 0.36 |
| Current smoker (%) | 27.5 | 13.2 | 34.6 | 29.4 | 34.2 | 40.3 | 54.1 |
| Alcohol drinker (%)† | |||||||
| Non‐drinker | 41.9 | 40.4 | 26.0 | 28.2 | 29.0 | 30.9 | 22.5 |
| Drinker (<46 g ethanol/day) | 51.6 | 54.6 | 63.8 | 62.6 | 62.4 | 59.8 | 62.6 |
| Drinker (≥46 g ethanol/day) | 6.5 | 5.1 | 10.2 | 9.2 | 8.6 | 9.3 | 14.8 |
| <12.0 | 12.0–<13.0 | 13.0–<14.0 | 14.0–<15.0 | ≥15.0 | |||
|---|---|---|---|---|---|---|---|
| MCV (fL) | |||||||
| <80 | 80–90 | >90 | |||||
| Women | |||||||
| n | 330 | 348 | 153 | 1,437 | 2,019 | 963 | 169 |
| Age (years) | 43.4 ± 6.6 | 43.4 ± 6.6 | 46.3 ± 11.3 | 45.3 ± 11.1 | 46.2 ± 11.1 | 47.4 ± 10.5 | 48.9 ± 9.5 |
| BMI (kg/m2) | 22.2 ± 3.8 | 21.5 ± 3.4 | 21.0 ± 3.0 | 21.6 ± 3.4 | 21.9 ± 3.6 | 22.4 ± 3.9 | 23.6 ± 4.6 |
| FPG (mg/dL) | 92.5 ± 7.4 | 91.2 ± 7.7 | 90.0 ± 7.4 | 91.4 ± 8.1 | 92.1 ± 8.8 | 93.9 ± 9.6 | 95.7 ± 10.5 |
| HbA1c (%) | 5.57 ± 0.29 | 5.51 ± 0.31 | 5.31 ± 0.34 | 5.42 ± 0.32 | 5.41 ± 0.33 | 5.40 ± 0.33 | 5.41 ± 0.33 |
| Current smoker (%) | 13.0 | 8.9 | 12.4 | 9.6 | 10.0 | 13.5 | 22.5 |
| Alcohol drinker (%)† | |||||||
| Non‐drinker | 65.2 | 72.0 | 67.6 | 66.5 | 62.2 | 66.4 | 54.2 |
| Drinker (<46 g ethanol/day) | 33.8 | 28.0 | 29.4 | 31.9 | 36.4 | 32.1 | 45.8 |
| Drinker (≥46 g ethanol/day) | 1.0 | 0 | 2.9 | 1.6 | 1.4 | 1.4 | 0 |
†
Data were available for people in one major company (15,039 men and 2,731 women). BMI, body mass index; FPG, fasting plasma glucose; HbA1c, hemoglobin A1c; MCV, mean corpuscular volume.