Table 2 Characteristics of study participants stratified by age at study entry (N = 119,871).
Variable | <50 y/o (n = 54,535) | ≥50 y/o (n = 65,336) |
|---|---|---|
Age | ||
Age, mean (SD) | 41.43 (5.25) | 60.39 (8.48) |
Male (%) | 33.72 | 37.30 |
CKD stages | ||
   Stage 1 high | 46.69 | 3.90 |
   Stage 1 | 30.24 | 36.75 |
   Stage 2 | 22.75 | 50.90 |
   Stage 3 | 0.32 | 8.44 |
BMI (%) | ||
   Underweight | 3.93 | 1.89 |
   Normal | 63.49 | 53.54 |
Overweight and obese | 32.58 | 44.57 |
Current smoker (%) | 17.12 | 13.07 |
Non-abstainer (%) | 45.04 | 31.26 |
Comorbidities, % | ||
Diabetes | 3.22 | 13.27 |
Hypertension | 5.41 | 28.75 |
Ischemic heart disease | 1.35 | 9.52 |
Myocardial infarction | 0.04 | 0.36 |
Cardiac dysrhythmia/atrial fibrillation | 1.21 | 3.87 |
Congestive heart failure | 0.31 | 2.03 |
Stroke | 0.20 | 1.99 |
Peripheral vascular disease | 0.11 | 0.68 |
Disorders of lipid metabolism | 4.86 | 17.17 |
Chronic lung disease | 4.17 | 10.49 |
Chronic liver disease | 5.88 | 8.08 |
Autoimmune disease | 2.23 | 3.06 |
Dementia | 0.01 | 0.39 |
Cancer | 0.92 | 2.69 |
Charlson comorbidity score, mean (SD) | 0.21 (0.58) | 0.59 (1.01) |
Dipstick proteinuria (%) | ||
− to +/− | 68.14 | 95.75 |
1+ | 0.64 | 1.97 |
≥2+ | 0.26 | 0.96 |
Not available | 30.96 | 1.32 |
Drug use and hospitalization history, % | ||
Systemic steroid use >30 days before study entry | 0.74 | 1.72 |
Hospitalization within 6 months before enrollment | 2.17 | 3.36 |
Hospitalization within 6 months before index hospitalization for infection | 0.85 | 3.67 |
Hospital stay (days) | 7.90 (17.18) | 11.83 (18.23) |
