The Association of Marital Status With Kidney Cancer Surgery Morbidity

September 1, 2022 updated by: Yuzhe Tang, Beijing Tsinghua Chang Gung Hospital
Retrospective cohort study

Study Overview

Status

Completed

Conditions

Detailed 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.

Study Type

Observational

Enrollment (Actual)

106752

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

14 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

N/A

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

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.

Description

Inclusion Criteria:

  1. Surgery was performed for a kidney mass.
  2. age >= 18 years
  3. "elective" cases
  4. Surgery was performed on the day0 or day1 after administration.

Exclusion Criteria:

  1. ICD codes are not available.
  2. Missing value of the primary outcomes and exposure.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Retrospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
surgical complications
Time Frame: 90 days after surgery
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).
90 days after surgery

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
patient disposition
Time Frame: 90 days after surgery
patient disposition was divided into home and none home such as skilled nursing or rehabilitation facility
90 days after surgery
readmission rates
Time Frame: 90 days after surgery
readmission was defined as readmitted into the hospital for any reason
90 days after surgery

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Beijing Tsinghua Chang Gung Hospital

Collaborators

Brigham and Women's Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 1, 2003

Primary Completion (Actual)

March 31, 2018

Study Completion (Actual)

March 31, 2018

Study Registration Dates

First Submitted

August 31, 2022

First Submitted That Met QC Criteria

August 31, 2022

First Posted (Actual)

September 2, 2022

Study Record Updates

Last Update Posted (Actual)

September 6, 2022

Last Update Submitted That Met QC Criteria

September 1, 2022

Last Verified

September 1, 2022

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 42746034

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Undecided

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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