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Table 2 Criteria for depression and possible biases in MRR

From: Depression in adults with sickle cell disease: a systematic review of the methodological issues in assessing prevalence of depression

Year Authors Criteria for depression Possible biases
2009 Carroll et al International classification of disease (ICD-9) diagnostic coding for mood disorder (including depressive and bipolar disorders): 296.00 to 296.89 Depressed patients without diagnostic reported
Depressed patients diagnosed but code not reported
2011 Carroll et al ICD-9 diagnostic coding for mood disorder (including depressive and bipolar disorders): 296.00 to 296.89 Depressed patients without diagnostic reported
Depressed patients diagnosed but code not reported
2015 Mann-Jiles et al Reported symptoms related to depression Other symptoms related to depression were treated separately, for example
Anhedonia,
Hyper- or hypophagia
Insomnia
Sleep/wake disturbance
A list of symptoms is not enough to hypothesised depression: risk of under- or overestimation
2016 Fayand et al Diagnostic coding, then
Confirmation with medical records by:
Mention of opinion,
Medical monitoring,
Or psychiatric treatment
Depressed patients without diagnostic reported
Depressed patients diagnosed but code not reported