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Baseline Dyspnea Index Questionnaire
Definition 1
A standardized rating scale developed by Mahler et al in 1984, which is a general scale used to measure the rating of severity of dyspnea at a single state (as baseline). The questionnaire contains 3 categories of 24 items; functional impairment, magnitude of task and magnitude of effort. The instrument is scored on a five-grade scale for each category, where grade 0 represents very severe impairment and grade 4 represents no impairment. (NCI Thesaurus)
Definition 2
Baseline Dyspnea Index (BDI) (Mahler DA, Weinberg DH, Wells CK, Feinstein AR. The measurement of dyspnea. Contents, interobserver agreement, and physiologic correlates of two new clinical indexes. Chest 1984, 85: 751-758). (NCI Thesaurus/CDISC)
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