Pérez Blanco, LucíaFelpete López, AlbaPatten, Scott B.Mallo López, Sabela CarmePereiro Rozas, Arturo X.Campos Magdaleno, MaríaJuncos Rabadán, Onésimo2022-11-292022-11-292022Ageing Research Reviews 82 (2022) 101772http://hdl.handle.net/10347/29479Background: Subjective cognitive complaints (SCCs) are considered a risk factor for objective cognitive decline and conversion to dementia. The aim of this study was to determine whether self-reported or informant-reported SCCs best predict progression to mild cognitive impairment (MCI) and/or dementia. Methods: We reviewed prospective longitudinal studies of Cognitively Unimpaired (CU) older adults with self-reported and informant-reported SCCs at baseline, assessed by questions or questionnaires that considered the transition to MCI and/or dementia. A random-effects meta-analysis was performed to obtain pooled estimates and 95% CIs. Results: Both self-reported and informant-reported SCCs are associated with an elevated risk of transition from CU to MCI and/or dementia. The association appears stronger and more robust for informant-reported data [1.38, with a 95% CI of 1.16 –1.64, p < 0.001] than for self-reported data [1.27 (95% CI 1.06 – 1.534, p = 0.011]. Conclusions Our results suggest that corroborated information from one informant could provide important details for distinguishing between normal aging and clinical stateseng© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by- nc-nd/4.0/)Attribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Self-reportInformant-reportSubjective cognitive declineProgressionCognitive impairmentMeta-analysisjournal article10.1016/j.arr.2022.1017721568-1637open access