Table 1 Baseline demographics, clinical characteristics, and surgical characteristics of the elective posterior lumbar fusion patient population
Characteristic, N (%) except where specified | Number of patients | % |
|---|---|---|
Total | 43,063 | |
Demographic characteristics | ||
Age (years) at index date | ||
Mean (SD) | 59.4 (13.69) | |
Median (Range) | 61 (18, 85) | |
≥ 18–55 | 15,221 | 35.35 |
56–65 | 11,639 | 27.03 |
66–75 | 11,579 | 26.89 |
76 - < 86 | 4624 | 10.74 |
Race | ||
White | 38,535 | 89.49 |
Black or African American | 2556 | 5.94 |
Asian | 223 | 0.52 |
Other/Unknown | 1749 | 4.06 |
Sex | ||
Male | 20,563 | 47.75 |
Female | 22,487 | 52.22 |
Unknown | 13 | 0.03 |
Clinical & surgical characteristics in 183-day baseline | ||
Arthritis and other inflammation (or rheumatic events) | ||
Rheumatoid arthritis | 0 | 0.00 |
Reactive arthritis | 579 | 1.34 |
Psoriatic arthroplasty | 42 | 0.10 |
Spondyloarthritis, including ankylosing spondylitis | 1476 | 3.43 |
Blood disorders | ||
Anemia/other anemia | 3494 | 8.11 |
Intracranial Hemorrhage | 52 | 0.12 |
Gastrointestinal bleeding | 216 | 0.50 |
Thrombocytopenia | 333 | 0.77 |
Cardiovascular events and/or conditions | ||
Acute myocardial infarction | 270 | 0.63 |
Angina | 1997 | 4.64 |
Cardiac dysrhythmias | 3997 | 9.28 |
Stroke | 293 | 0.68 |
Chronic ischemic disease | 3876 | 9.00 |
Peripheral vascular disease | 1811 | 4.21 |
Dementia | ||
Dementia | 130 | 0.30 |
Diabetes | ||
Diabetes, type 1 | 272 | 0.63 |
Diabetes, type 2 | 5970 | 13.86 |
Digestive disorders | ||
Crohn’s disease | 73 | 0.17 |
Ulcerative colitis | 71 | 0.16 |
Peptic ulcer disease | 240 | 0.56 |
Hepatic disorders | ||
Liver disease and cirrhosis | 607 | 1.41 |
Nervous system disorders | ||
Guillain-Barre syndrome | 0 | 0.00 |
Multiple sclerosis | 105 | 0.24 |
Respiratory disorders | ||
Asthma/wheezing/bronchospasm | 3353 | 7.79 |
Bronchitis/chronic obstructive pulmonary disease | 2315 | 5.38 |
Obstructive asthma | 1126 | 2.61 |
Surgical characteristics | ||
Existing permanently implanted device or prosthesis at baseline | 1270 | 2.95 |
Total length of hospital stay | ||
Mean (SD) | 3.8 (3.4) | |
Median (Min, Max) | 3 (1, 90) | |
History of allogenic blood transfusion during surgery | 1 | 0.00 |
Revisional surgery on the same day as index surgery | 320 | 0.74 |
Use of implanted material during surgery on the same day as index surgery | 2667 | 6.19 |
Thrombotic events | ||
Deep vein thrombosis | 386 | 0.90 |
Pulmonary embolism | 170 | 0.39 |
Thyroid disorders | ||
Grave’s disease | 37 | 0.09 |
Autoimmune thyroiditis | 55 | 0.13 |
Hyperthyroidism | 109 | 0.25 |
Hypothyroidism | 3455 | 8.02 |
Thyroiditis | 6 | 0.01 |