Table 1.
The basic characteristics of the subjects and the prevalence of H. pylori infection and anemia in the study
| Variable | Total (N = 17791) | H. pylori | Anemia | ||||
|---|---|---|---|---|---|---|---|
| Positive (n = 7804) | Negative (n = 9987) | P value | Yes (n = 2250) | No (n = 15541) | P value | ||
| Age, year, Mean ± SD | 45 ± 18 | 46 ± 18 | 45 ± 18 | <0.001 | 54 ± 20 | 45 ± 18 | <0.001 |
| ≤45 | 10606 (59.6) | 4425 (41.2) | 6181 (58.3) | <0.001 | 424 (4.0) | 10182 (96.0) | <0.001 |
| 45~60 | 2847 (16.0) | 1352 (47.5) | 1495 (52.5) | 143 (5.0) | 2704 (95.0) | ||
| >60 | 4338 (24.4) | 2027 (46.7) | 2311 (53.3) | 383 (8.8) | 3955 (91.2) | ||
| Sex, female (%) | 5844 (32.5) | 2325 (39.8) | 3519 (60.2) | <0.001 | 649 (11.0) | 5195 (88.9) | <0.001 |
| Underlying diseases | 5374 (30.2) | 2460 (45.8) | 2914 (54.2) | 0.001 | 345 (6.4) | 5029 (93.6) | <0.001 |
| Diabetes | 2078 (11.7) | 927 (44.6) | 1151 (55.4) | 0.466 | 140 (6.7) | 1938 (93.3) | 0.003 |
| Hypertension | 4467 (25.1) | 2068 (46.3) | 2399 (53.7) | <0.001 | 298 (6.7) | 4169 (93.3) | <0.001 |
| Coronary heart disease | 813 (4.6) | 348 (42.8) | 465 (57.2) | 0.533 | 96 (11.8) | 717 (88.2) | <0.001 |
| LDL > 3.1 mmol/L | 4673 (26.3) | 2177 (46.6) | 2496 (53.4) | <0.001 | 136 (2.9) | 4537 (97.1) | <0.001 |
| HDL<0.83 mmol/L | 5286 (29.1) | 2436 (46.1) | 2850 (53.1) | <0.001 | 213 (4.0) | 5073 (96.0) | <0.001 |
| TG > 1.71 mmol/L | 4512 (25.4) | 2039 (45.2) | 2473 (54.8) | 0.038 | 121 (2.7) | 4391 (97.3) | <0.001 |
| TC > 5.7 mmol/L | 3253 (18.3) | 1463 (45.0) | 1790 (55.0) | 0.159 | 111 (11.7) | 3142 (88.3) | <0.001 |
| Hemoglobin, g/L | 147 ± 15 | 147 ± 14 | 147 ± 15 | 0.053 | 114 ± 12 | 149 ± 13 | <0.001 |
| Male | 154 ± 11 | 154 ± 11 | 155 ± 11 | <0.001 | 122 ± 10 | 154 ± 11 | <0.001 |
| Female | 132 ± 11 | 132 ± 11 | 133 ± 11 | 0.393 | 111 ± 10 | 135 ± 8 | <0.001 |
| BMI, kg/m2 | 24.1 ± 3.5 | 24.3 ± 3.5 | 24.0 ± 3.4 | <0.001 | 22.9 ± 3.5 | 24.2 ± 3.4 | <0.001 |
| Underweight | 498 (3.4) | 197 (39.6) | 301 (60.4) | 0.134 | 54 (10.8) | 444 (89.2) | <0.001 |
| Normal | 7012 (47.3) | 2929 (41.8) | 4083 (58.2) | 454 (6.5) | 6558 (93.5) | ||
| Overweight | 5453 (27.3) | 2503 (45.9) | 2950 (54.1) | 197 (3.6) | 5256 (96.4) | ||
| Obesity | 1869 (12.6) | 875 (46.8) | 994 (53.2) | 65 (3.5) | 1804 (96.5) | ||
SD, standard deviation; BMI, body mass index.