Previous procedures include principal component analysis [ 23, 24], Z scores [ 19, 20, 23, 25- 27, 34], and centile rankings [ 21, 22].
The APRDRG severity classification is a proprietary, validated, and extensively used measure of illness severity that utilizes patient discharge data including principal and secondary diagnoses, procedures, and demographic information to assign patients to subclasses of illness severity [ 11].
We also provide information on data reduction procedures, including inter-item reliability (Cronbach's alpha coefficient) and principal component structure of various summary scores.
All principal investigators, research coordinators, physicians and senior nurses at each participating centre are trained on study procedures, including data collection and bedside training on the performance of GCS, SAS and RASS evaluations.
The HMDS data included principal and secondary diagnoses and procedures; and dates and types of admissions and separations.
Information provided in the KID includes principal and secondary diagnoses, principal and secondary procedures, admission and discharge status, patient demographics (e.g., gender, age, race), total charges and length of stay.
This included Principal Component (PC) analysis and image classification.
All diagnoses include principal diagnosis and non-principal diagnoses.
This group includes principal component regression e.g. [ 6].
The diagnoses included principal, stay and all diagnosis.
