Clinical Trial Details
— Status: Completed
Administrative data
NCT number |
NCT05526599 |
Other study ID # |
42746034 |
Secondary ID |
|
Status |
Completed |
Phase |
|
First received |
|
Last updated |
|
Start date |
January 1, 2003 |
Est. completion date |
March 31, 2018 |
Study information
Verified date |
September 2022 |
Source |
Beijing Tsinghua Chang Gung Hospital |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Observational
|
Clinical Trial Summary
Retrospective cohort study
Description:
Data source and study cohort:
We conducted a retrospective cohort study using the Premier Healthcare Database (PHD, Premier
Inc., Charlotte, NC), an extensive, US hospital-based, all-payer database representing
approximately 20% of annual United States inpatient discharges at community and academic
centers. The International Classification of Diseases, ninth revision (ICD-9), and tenth
revision (ICD-10) procedure codes were used to identify patients who had undergone elective
kidney cancer surgery between the 15 years of study from 2003 to 2017. The cohort was then
restricted based on appropriate ICD-9 and ICD-10 diagnosis codes to ensure that surgery was
performed for a kidney mass. The study cohort was also limited to adult patients (age >= 18
years), "elective" cases based on administrative codes, as well as surgery on hospital day
zero or one to minimize outlier patients who could skew the surgical outcomes.
Outcomes:
The primary outcome of this study was the 90-day complication rate. Complication rates were
based on the Clavien-Dindo classification of surgical complications and divided into four
categories: no complications, minor complications (Clavien grades 1, 2), and non-fatal major
complications (Clavien grades 3, 4), and mortality (Clavien grade 5). Clinical systems also
categorized complications (bleeding, cardiac, endocrine, gastrointestinal, infection,
neurology, pulmonary, renal, soft tissue, urologic, venous thromboembolism) using Health Care
Cost and Utilization Project Clinical Classification Software Level II or III designations;
of note, the category for "surgical" complications was excluded given that all complications
captured in this analysis are considered surgical complications. Secondary outcomes included
patient disposition, length of hospital stay, and readmission rate.