PMID- 30140328 OWN - NLM STAT- MEDLINE DCOM- 20181121 LR - 20191210 IS - 1918-1523 (Electronic) IS - 1203-6765 (Print) IS - 1203-6765 (Linking) VI - 2018 DP - 2018 TI - An Assessment of Clinically Important Differences on the Worst Pain Severity Item of the Modified Brief Pain Inventory in Patients with Diabetic Peripheral Neuropathic Pain. PG - 2140420 LID - 10.1155/2018/2140420 [doi] LID - 2140420 AB - OBJECTIVES: Using patient global impression of change (PGIC) as an anchor, an approximately 30% reduction on an 11-point numeric pain intensity rating scale (PI-NRS) is considered a clinically important difference (CID) in pain. Our objective was to define the CID for another pain measure, the worst pain severity (WPS) item of the modified Brief Pain Inventory (m-BPI). METHODS: In this post hoc analysis of a double-blind, placebo-controlled, phase 2 study, 452 randomized patients with diabetic peripheral neuropathic pain (DPNP) were followed over 5 weeks, with m-BPI data collected weekly and PGIC at treatment conclusion. Receiver operating characteristic (ROC) curves (via logistic regression) were used to determine the changes in the m-BPI-WPS score that best predicted ordinal clinical improvement thresholds (i.e., "minimally improved" or better) on the PGIC. RESULTS: Similar to the PI-NRS, a change of -3 (raw) or -33.3% from the baseline on the m-BPI-WPS optimized prediction for the "much improved" or better PGIC threshold and represents a CID. There was a high correspondence between observed and predicted PGIC categories at each PGIC threshold (ROC AUCs were 0.78-0.82). CONCLUSIONS: Worst pain on the m-BPI may be used to assess clinically important improvements in DPNP studies. Findings require validation in larger studies. FAU - Marcus, James AU - Marcus J AUID- ORCID: 0000-0001-5223-4173 AD - Pharmerit International, Bethesda, MD, USA. FAU - Lasch, Kathryn AU - Lasch K AUID- ORCID: 0000-0002-5332-2906 AD - Pharmerit International, Boston, MA, USA. FAU - Wan, Yin AU - Wan Y AD - Pharmerit International, Bethesda, MD, USA. FAU - Yang, Mei AU - Yang M AD - Daiichi Sankyo, Inc., Basking Ridge, NJ, USA. FAU - Hsu, Ching AU - Hsu C AD - Daiichi Sankyo, Inc., Basking Ridge, NJ, USA. FAU - Merante, Domenico AU - Merante D AD - Daiichi Sankyo Development Ltd., Gerrards Cross, Buckinghamshire, UK. LA - eng PT - Clinical Trial, Phase II PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20180722 PL - United States TA - Pain Res Manag JT - Pain research & management JID - 9612504 RN - 0 (Bridged Bicyclo Compounds) RN - 0 (Hypoglycemic Agents) RN - S7LK2KDM5U (mirogabalin) SB - IM MH - Bridged Bicyclo Compounds/*therapeutic use MH - Diabetic Neuropathies/*complications/*drug therapy MH - Double-Blind Method MH - Female MH - Humans MH - Hypoglycemic Agents/therapeutic use MH - Male MH - *Outcome Assessment, Health Care/classification/methods MH - *Pain/diagnosis/drug therapy/etiology MH - Pain Measurement/classification/*methods MH - ROC Curve MH - Statistics as Topic PMC - PMC6081576 EDAT- 2018/08/25 06:00 MHDA- 2018/11/22 06:00 PMCR- 2018/07/22 CRDT- 2018/08/25 06:00 PHST- 2018/02/05 00:00 [received] PHST- 2018/05/22 00:00 [accepted] PHST- 2018/08/25 06:00 [entrez] PHST- 2018/08/25 06:00 [pubmed] PHST- 2018/11/22 06:00 [medline] PHST- 2018/07/22 00:00 [pmc-release] AID - 10.1155/2018/2140420 [doi] PST - epublish SO - Pain Res Manag. 2018 Jul 22;2018:2140420. doi: 10.1155/2018/2140420. eCollection 2018.