摘要：Systematic reviews of randomized trials that include measurements of health-related quality of life potentially provide critical information for patient and clinicians facing challenging health care decisions. When, as is most often the case, individual randomized trials use different measurement instruments for the same construct (such as physical or emotional function), authors typically report differences between intervention and control in standard deviation units (so-called
关键词：Pool Estimate ; Minimal Important Difference ; Standard Deviation Unit ; HRQL Measure ; HRQL Instrument
