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Table 4 Severity ratings compatible with the MSM for commonly used rating scales

From: Standardisation framework for the Maudsley staging method for treatment resistance in depression

Instrument Clinical status categories based on severity scores Remark
Remission Subthreshold Mild Moderate Severe Very severe
QIDS-C16 0–5   6–10 11–15 16–20 > 20 Remission scores are likely to be too high and include subthreshold status
QIDS-SR16 0–5   6–10 11–15 16–20 > 20
IDS-C 0–11   12–23 24–36 37–46 > 46
IDS-SR 0–13   14–25 26–38 39–48 > 48
HRSD17 0–7   8–13 14–19 20–25 26–52
MADRS 0–6   7–19 20–34 35–60  
CGI 1 2 3 4 5–6 7  
PSR 1–2 3 4 5 6 7  
  1. Abbreviations: CGI-Clinical Global Impression; HRSD17-Hamilton Rating Scale for Depression (17 item scale); IDS-C-Inventory of Depressive Symptoamtology, Clinician Rating; IDS-SR-Inventory of Depressive Symptomatology, Self-Report; MADRS-Montgomery-Asberg Depression Rating Scale*; PSR-Psychiatric Status Rating; QIDS-C-Quick Inventory of Depressive Symptomatology Clinician rated version; QIDS-SR-Quick Inventory of Depressive Symptomatology Self Rated version
  2. Note: Adapted from http://www.ids-qids.org/interpretation.html (accessed on 29 Jan 2016) and the original sources of the instruments except for MADRS [108]