Fries, J. F., Krishnan, E., Rose, M., Lingala, B., & Bruce, B. (2011). Improved responsiveness and reduced sample size requirements of PROMIS physical function scales with item response theory. BioMed Central.
Chicago ZitierstilFries, James F., Eswar Krishnan, Matthias Rose, Bharathi Lingala, und Bonnie Bruce. Improved Responsiveness and Reduced Sample Size Requirements of PROMIS Physical Function Scales With Item Response Theory. BioMed Central, 2011.
MLA ZitierstilFries, James F., et al. Improved Responsiveness and Reduced Sample Size Requirements of PROMIS Physical Function Scales With Item Response Theory. BioMed Central, 2011.
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