Table 1 General Characteristics of participants according to different age groups
From: Association of active Helicobacter pylori infection and anemia in elderly males
Characteristics | Age group (years) | P value | Total (n = 646) | ||
|---|---|---|---|---|---|
65~74 years (n = 239) | 75~84 years (n = 162) | ≥85 years (n = 245) | |||
Mean ± SD | |||||
 Age (years) | 69.48 ± 2.78 | 79.72 ± 2.97 | 88.87 ± 3.11 | <  0.001 | 79.40 ± 8.90 |
 Hemoglobin(g/L) | 145.91 ± 13.39 | 145.76 ± 13.09 | 146.14 ± 13.58 | 0.959 | 145.96 ± 13.36 |
 MCV(fl) | 91.36 ± 4.47 | 90.57 ± 3.82 | 91.39 ± 3.70 | 0.084 | 91.18 ± 4.04 |
 Serum iron (μmol/L) | 20.47 ± 6.49 | 19.97 ± 5.55 | 19.25 ± 5.57 | 0.076 | 19.88 ± 5.94 |
 CCI score | 1.55 ± 1.27 | 1.95 ± 1.53 | 2.28 ± 1.68 | <  0.001 | 1.93 ± 1.53 |
Median (IQR) | |||||
 Serum ferritin (ng/mL) | 180.50 (110.80–256.50) | 165.50 (109.80–272.75) | 186.10 (107.30–273.60) | 0.903 | 179.55 (110.08–268.10) |
N (%) | |||||
 Malignant tumor | 22 (9.2) | 30 (18.5) | 45 (18.4) | 0.005 | 97 (15.0) |
 Other comorbidities | 13 (5.4) | 25 (15.4) | 65 (26.5) | <  0.001 | 103 (15.9) |
H. pylori positive | 85 (35.6) | 59 (36.4) | 84 (34.3) | 0.767 | 228 (35.3) |