Table 2 Study Characteristics
Author, Year. Country | Study Title | Study design; Exclusion criteria (if provided) | Patient Factorsa | TKA Patients (N) | Age: mean (±SD or range) | Female Gender: n (%) | Statistical Analysisa |
|---|---|---|---|---|---|---|---|
Anoushiravani et al., 2016. USA | Assessing In-Hospital Outcomes and Resource Utilization After Primary Total Joint Arthroplasty Among Underweight Patients. | Retrospective matched cohort.; Weight loss and obesity, due to the nature of the study, were excluded from the matching criteria. | BMI | 1315 | 70 (15–91 | 1029 (78) | Univariate |
Crawford et al., 2011. USA | Preoperative Predictors of Length of Hospital Stay and Discharge Disposition Following Primary Total Knee Arthroplasty at a Military Medical Center. | Retrospective cohort; Bilateral, revision, or uni-compartmental TKA. | Age ASA BMI | 383 | 64 (±10) | 214 (56) | Univariate and Multivariable regression |
D’Apuzzo et al., 2015. USA | The John Insall Award: Morbid Obesity Independently Impacts Complications, Mortality, and Resource Use After TKA. | Retrospective matched cohort; Obesity, due to the nature of the study, was excluded from the matching criteria. Morbidly obese patients who could not be matched were excluded. | BMI | 180,585 | 61 (22–90) | 135,541 (75) | Univariate |
Murphy et al., 2018. Australia | The Impact of Older Age on Patient Outcomes Following Primary Total Knee Arthroplasty. | Retrospective cohort | Age ASA BMI CCI Gender SF-12 PROM SES Smoking | 2838 | 70 (± 9) | 1882 (66) | Univariate and Multivariable regression |
Prohaska et al., 2017. USA | Preoperative Body Mass Index and Physical Function are Associated with Length of Stay and Facility Discharge after Total Knee Arthroplasty | Prospective cohort; Bilateral procedures, simultaneous and staged within one year, and those with concomitant joint arthroplasty or ligament repair on the ipsilateral extremity were excluded. | Age BMI CCI Gender Hemoglobin Smoking VR-12 PROM | 716 | 63 (±11) | 425 (59) | Univariate and Multivariable regression |
Rissman et al., 2016. USA | Predictors of Facility Discharge, Range of Motion, and Patient-Reported Physical Function Improvement After Primary Total Knee Arthroplasty: A Prospective Cohort Analysis | Prospective cohort; Simultaneous bilateral TKAs were excluded. | Age BMI CCI Gender ROM VR-12 PROM | 738 | 64 (±10) | 422 (57) | Univariate and Multivariable regression |
Sayeed et al. 2016. USA | Comparing In-Hospital Total Joint Arthroplasty Outcomes and Resource Consumption Among Underweight and Morbidly Obese Patients | Retrospective matched cohort; Weight loss and obesity, due to the nature of the study, were excluded from the matching criteria. | BMI | 956 | 67 (15–91) | 791 (83) | Univariate |
Schwarzkopf et al., 2016. USA | Factors Influencing Discharge Destination After Total Knee Arthroplasty: A Database Analysis | Retrospective cohort | Age CCI Gender Ethnicity | 28,611 | 68 | 17,930 (63) | Multinomial regression |
Sikora-Klak et al., 2016. USA | The Effect of Comorbidities on Discharge Disposition and Readmission for Total Joint Arthroplasty Patients | Retrospective cohort Bilateral procedures were excluded as were patients undergoing joint arthroplasty for fracture. | Age BMI Diabetes Gender Smoking VTE history | 2009 | 65 (±11) | 1347 (67) | Univariate and Multivariable regression |