df_match: Propensity score matched elective laparoscopic...
In dylanrussellmd/nsqipBileSpill: NSQIP Bile Spill

Description Usage Format Source

A dataset containing 48,240 records of elective laparoscopic cholecystectomies from the NSQIP registry. This data was derived from a larger dataset, nsqipBileSpill::df, by propensity score matching for assignment to the variable spill against various pre-operative risk factors.

df_match

A data frame with 48,240 rows and 56 variables:

sex: Logical, TRUE for male, FALSE for female
age: Age in years
bmi: BMI of patient in kg/m^2
diabetes: Diabetes mellitus with oral agents or insulin
insulin: Insulin dependent diabetes mellitus
smoke: Current smoker within 1 year
dyspnea: Presence of dypsnea
preopindependent: Functionally independent prior to surgery
hxcopd: History of severe COPD
ascites: Ascites within 30 days prior to surgery
hxchf: Congestive heart failure within 30 days prior to surgery
hypermed: Hyperetnsion requiring medication
dialysis: Currently requiring or on dialysis
discancr: Disseminated cancer
steroid: Steroid/immunosuppressant use for a chronic condition
wtloss: >10% weight loss of body weight within 6 months prior to surgery
bleeddis: Nleeding disorders
spill: Presumptive bile spill, based on wound classification
optime: Total operation time in minutes
supinfec: Superficial incisional surgical site infection
wndinfd: Deep incisional surgical site infection
orgspcssi: Organ-space surgical site infection
mort: Death within 30 days of surgery
tothlos: Length of total hospital stay in days
dindo_min: Minor complication (Dindo-Clavien 1 or 2)
dindo_maj: Major complication (Dindo-Clavien 3 or more)
ioc: Intraoperative cholangiogram performed
distance: Estimated distance measure from propenstiy score match
weights: The weights assigned to each unit in the matching process. Unmatched units have weights equal to 0. Matched treated units have weight 1. Each matched control unit has weight proportional to the number of treatment units to which it was matched, and the sum of the control weights is equal to the number of uniquely matched control units