Table 3.
Characteristics of all study participants and participants according to anemia status.
| All Participants (N = 5979; 100%) |
Participants with Anemia (n = 379; 6.3%) |
Participants without Anemia (n = 5600; 93.7%) |
|
|---|---|---|---|
| Women | 3149 (52.7) | 183 (3.06) | 2966 (49.6) |
| Age | |||
| 20–29 | 327 (5.5) | 18 (0.3) | 309 (5.2) |
| 30–49 | 84 (1.4) | 1953 (32.7) | 2037 (34.1) |
| 50–69 | 2519 (42.1) | 138 (2.3) | 2381 (39.8) |
| >=70 | 1096 (18.3) | 139 (2.3) | 957 (16.0) |
| Fatigue | 1775 (29.7) | 128 (2.2) | 1647 (27.5) |
| Lack of energy | 968 (16.2) | 81 (1.4) | 887 (14.8) |
| Lack of concentration | 927 (15.5) | 70 (1.2) | 857 (14.3) |
| Shortness of breath/weakness | 1727 (28.9) | 145 (2.4) | 1582 (26.5) |
| Iron deficiency (serum ferritin) |
292 (5.0) (180 missing) |
95 (1.6) (13 missing) |
197 (3.4) (167 missing) |
| Depression /anxiety (SHIP-data) |
1273 (21.3) (22 missing) |
74 (1.2) (2 missing) |
1199 (20.1) (20 missing) |
| Depression / anxiety (claims data) | 715 (12.0) | 45 (0.8) | 670 (11.2) |
| Insomnia | 1453 (24.3) | 109 (1.8) | 1344 (22.5) |
| Hypertension | 569 (9.6) (30 missing) |
16 (0.3) (3 missing) |
553 (9.3) (27 missing) |
| Heart failure (claims data) | 121 (2.0) | 28 (0.4 | 93 (1.6) |
| Chronic kidney disease (claims data) | 165 (2.8) | 44 (0.8) | 121 (2.0) |
| Diabetes (claims data) | 794 (13.3) | 94 (1.6) | 700 (11.7) |
| Hypothyroidism (claims data) |
375 (6.3) | 27 (0.5) | 348 (5.8) |
| Cancer (claims data) | 92 (1.5) | 14 (0.2) | 78 (1.3) |
| Asthma (claims data) | 301 (5.0) | 20 (0.3) | 281 (4.7) |
| COPD (claims data) | 209 (3.5) | 28 (0.5) | 181 (3.0) |
| Charlson Comorbidity Index (claims data) | |||
| 0 | 4417 (73.9) | 216 (3.6) | 4201 (70.3) |
| 1 | 951 (15.9) | 63 (1.0) | 888 (14.9) |
| 2 | 324 (5.4) | 42 (0.7) | 282 (4.7) |
| 3–5 | 253 (4.2) | 49 (0.8) | 204 (3.4) |
| 6–9 | 34 (0.6) | 9 (0.2) | 25 (0.4) |
| Number of medications | |||
| 0 | 1656 (27.7) | 69 (1.2) | 1587 (26.5) |
| 1 | 1125 (18.8) | 48 (0.8) | 1077 (18.0) |
| 2 | 877 (14.7) | 40 (0.7) | 837 (14.0) |
| 3 | 607 (10.2) | 37 (0.7) | 570 (9.5) |
| 4 | 465 (7.8) | 29 (0.5) | 436 (7.3) |
| 5 | 385 (6.4) | 37 (0.6) | 348 (5.8) |
| >6 | 864 (14.4) | 119 (1.9) | 745 (12.5) |
| Medication with possible side-effect fatigue | 1061 (17.8) | 112 (1.9) | 949 (15.9) |
| Pregnant | 199 (3.3) | 4 (0.1) | 195 (3.2) |
COPD: chronic obstructive pulmonary disease, SHIP: Study of Health in Pomerania.