Skip to main content

Table 2 Variables for data extraction

From: Weight gain, overweight and obesity in solid organ transplantation—a study protocol for a systematic literature review

  Variables
General information • First author, title, year, journal, country, setting, language
Design • e.g. prospective or retrospective cohort, RCT, case-control, cross-sectional, mixed methods studies
• Time frame of data collection
Population • Type of transplant
• Inclusion and exclusion criteria
• Sample size
• Age, gender, race
• Disease characteristics
• Time of follow-up in years
Definitions and measurements • BMI categories
• Body composition
• Instruments and assessment tools
Statistics • Specify univariate and multivariate analysis
Epidemiological data • Prevalence of BMI categories
• Evolution of weight or BMI
Risk factors and correlates • Treatment- and disease-related, biological, genetic, environmental, behavioral or psychological factors
• Time: pre- or post-transplant
Note in: numbers/frequencies, mean/standard deviation, median/interquartile range, odds ratio, risk ratio, effect size, p value, others
Patient outcomes • Acute or late rejection
• Any postoperative, cardiovascular or pulmonary complications
• Mortality, time of survival
• Length of stay in hospital/intensive care unit
• Costs
• Quality of life
• Other outcomes as mentioned in the article
• Any comorbidities
Note in: numbers/frequencies, mean/standard deviation, median/interquartile range, odds ratio, risk ratio, effect size, p value, others
Remarks • Strength, weakness
• Other information
  1. RCT randomized controlled trial, BMI body mass index.