02128nas a2200253   4500000000100000008004100001260003100042653002800073653001000101653005000111653003100161653003100192100002500223700002300248700002000271700002700291700003700318700002000355245005900375300001200434490000700446520140700453022001401860       2019                            d  cjulbElsevier Espana S.L.U10aEvidence-based practice10aPCOMS10aPartners for Change Outcome Management System10aRoutine outcome monitoring10aSystematic client feedback1 aAlberto Gimeno-Peón1 aJavier Prado-Abril1 aFelix Inchausti1 aAnxo Barrio-Nespereira1 aMaría Teresa Álvarez-Casariego1 aBarry L. Duncan00aSystematic Client Feedback: A naturalistic pilot study  a132-1370 v253 aIntroduction: Routine outcome monitoring or systematic client feedback (SCF) continues to garner empirical support. The Partners for Change Outcome Management System (PCOMS) is one application of SCF with significant research support but no studies have been conducted in Spain. This investigation describes the effects of PCOMS in routine practice via a comparison to published PCOMS studies. Material and methods: In a retrospective observational study, PCOMS was implemented with 42 clients treated in routine psychotherapy. Outcomes were measured by the Outcome Rating Scale (ORS) and descriptively compared to PCOMS studies included in a meta-analysis and a PCOMS benchmarking study regarding reliable and/or clinically significant change, no change, and deterioration. Results: The current study achieved similar rates of reliable and clinically significant change (73.8\%) to the benchmarking study (65.6\%) and the RCTs (67.5\%). Regarding no change rates, the current study (23.8\%) mirrored results of the RCTs (25.6\%) and was better than the benchmarking study (35.4\%). The current study incurred a low 2.4\% deterioration rate compared to a 10.7\% and 7.0\% rate of the benchmarking study and RCTs, respectively. Conclusions: While not without flaws, this pilot study offers some evidence that the improved outcomes associated with PCOMS may also occur in psychotherapy settings in Spain.  a1134-7937