Table 1 Baseline Patient Characteristics
From: Anemia, costs and mortality in Chronic Obstructive Pulmonary Disease
Variable | COPD with Anemia (n = 27,932) | Non-anemic COPD (n = 104,492) | P value |
|---|---|---|---|
Demographics | |||
Age, mean (SD), years | 77.5 ± 7.8 | 74.7 ± 7.6 | <0.001 |
Age distribution (years, %) | |||
65–69 | 19.0% | 31.5% | <0.001 |
70–74 | 20.1% | 23.0% | |
75–79 | 21.4% | 18.7% | |
80–84 | 18.7% | 13.7% | |
> 84 | 20.6% | 12.1% | |
Male (%) | 34.2% | 42.4% | <0.001 |
Pulmonary Characteristics of Interest Present in the Six Month Baseline Period | |||
Concomitant asthma diagnosis | 25.2% | 22.6% | <0.001 |
Use of supplemental oxygen | 9.8% | 3.7% | <0.001 |
Comorbidities, % (by ICD-9 coded organ system) Present in the Six Month Baseline Period | |||
Infectious and parasitic | 1.7% | 1.4% | <0.001 |
Skin disorders | 2.3% | 2.2% | NS |
Digestive disorders | 2.5% | 2.5% | NS |
Mental disorders | 3.3% | 2.9% | <0.001 |
Genitourinary disorders | 3.9% | 3.3% | <0.001 |
Blood diseases | 4.3% | 0.8% | <0.01 |
Nervous system | 4.4% | 6.3% | <0.001 |
Musculoskeletal disorders | 7.7% | 9.0% | <0.001 |
Other respiratory disorders | 8.3% | 8.8% | <0.001 |
Endocrine and metabolic | 8.5% | 7.9% | <0.001 |
Circulatory disorders | 26.8% | 26.0% | <0.01 |