แปลบทความวิจัยThe University of Pennsylvania institutional review board
approved the study protocol. After screening patients
within 24 hours of hospital admission for eligibility and
obtaining informed consent, research assistants (RAs)
blinded to study aims and groups obtained baseline
sociodemographic and health status data and notified the
project manager, who assigned patients to study groups
using a computer-generated, institution-specific block 1:1
randomization algorithm.