++All or most of the criteria have been fulfilled.
Where they have not been fulfilled the conclusions of the study or review are thought very unlikely to alter.
+Some of the criteria have been fulfilled.
Those criteria that have not been fulfilled or not adequately described are thought unlikely to alter the conclusions.
Few or no criteria fulfilled.
The conclusions of the study are thought likely or very likely to alter.

From: APPENDIX 9, QUALITY CHECKLISTS FOR CLINICAL STUDIES AND REVIEWS

Cover of Dementia
Dementia: A NICE-SCIE Guideline on Supporting People With Dementia and Their Carers in Health and Social Care.
NICE Clinical Guidelines, No. 42.
National Collaborating Centre for Mental Health (UK).
Leicester (UK): British Psychological Society; 2007.
Copyright © 2007, The British Psychological Society & The Royal College of Psychiatrists.

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