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Table 1 Inclusion criteria

From: Benefits of interventions for respiratory secretion management in adult palliative care patients—a systematic review

Inclusion Exclusion
Was the population studied with the severity of the chronic disease identifiable and with one of the National Hospice Organization Criteria? [15] Did the study involve a population with disease severity that is not identifiable, or without any of the National Hospice Organization Criteria? [15]
Were the interventions performed to treat cough ineffectiveness, respiratory hypersecretion or its consequences (relative distress)? Were the interventions focused in treating other symptoms?
Was the study composed in its majority of adults? Did the study involve animals?
Was it a randomized clinical trial, observational study or a qualitative study? Was the study about death rattle?