Aromataris, E., Riitano, D. (2014). Systematic reviews. American Journal of Nursing, 114(5), 49–56. https://doi.org/10.1097/01.NAJ.0000446779.99522.f6.
Google Scholar | Crossref | ISI Azarpazhooh, M. R., Amiri, A., Morovatdar, N., Steinwender, S., Rezaei Ardani, A., Yassi, N., Biller, J., Stranges, S., Tokazebani Belasi, M., Neya, S. K., Khorram, B., Sheikh Andalibi, M. S., Arsang-Jang, S., Mokhber, N., Di Napoli, M. (2020). Correlations between COVID-19 and burden of dementia: An ecological study and review of literature. Journal of the Neurological Sciences, 416, 117013. https://doi.org/10.1016/j.jns.2020.117013.
Google Scholar | Crossref | Medline Bajaj, V, Gadi, N, Spihlman, AP, Wu, SC, Choi, CH, Moulton, VR (2021). Aging, immunity, and COVID-19: How age influences the host immune response to coronavirus infections? Frontiers in Physiology, 11, 571416. https://doi.org/10.3389/fphys.2020.571416.
Google Scholar | Crossref | Medline Baktash, V., Hosack, T., Patel, N., Shah, S., Kandiah, P., Van den Abbeele, K., Mandal, A. K. J., Missouris, C. G. (2020). Vitamin D status and outcomes for hospitalised older patients with COVID-19. Postgraduate Medical Journal, 97(1149), 442–447. https://doi.org/10.1136/postgradmedj-2020-138712.
Google Scholar | Medline Bavaro, D. F., Diella, L., Fabrizio, C., Sulpasso, R., Bottalico, I. F., Calamo, A., Santoro, C. R., Brindicci, G., Bruno, G., Mastroianni, A., Buccoliero, G. B., Carbonara, S., Lo Caputo, S., Santantonio, T., Monno, L., Angarano, G., Saracino, A. (2021). Peculiar clinical presentation of COVID- 19 and predictors of mortality in the elderly: a multicentre retrospective cohort Study. International Journal of Infectious Diseases, 105, 709–715. https://doi.org/10.1016/j.ijid.2021.03.021.
Google Scholar | Crossref | Medline Becerra-Muñoz, V. M., Núñez-Gil, I. J., Eid, C. M., García Aguado, M., Romero, R., Huang, J., Mulet, A., Ugo, F., Rametta, F., Liebetrau, C., Aparisi, A., Fernández-Rozas, I., Viana-Llamas, M. C., Feltes, G., Pepe, M., Moreno-Rondón, L. A., Cerrato, E., Raposeiras-Roubín, S., Alfonso, E., Carrero-Fernández, A. (2021). Clinical profile and predictors of in-hospital mortality among older patients hospitalised for COVID-19. Age and Ageing, 50(2), 326–334. https://doi.org/10.1093/ageing/afaa258.
Google Scholar | Crossref | Medline Bianchetti, A., Rozzini, R., Guerini, F., Boffelli, S., Ranieri, P., Minelli, G., Bianchetti, L., Trabucchi, M. (2020). Clinical Presentation of COVID19 in Dementia Patients. The Journal of Nutrition, Health & Aging, 24(6), 560–562. https://doi.org/10.1007/s12603-020-1389-1.
Google Scholar | Crossref | Medline Borges do Nascimento, I. J., Cacic, N., Abdulazeem, H. M., von Groote, T. C., Jayarajah, U., Weerasekara, I., Esfahani, M. A., Civile, V. T., Marusic, A., Jeroncic, A., Carvas Junior, N., Pericic, T. P., Zakarija-Grkovic, I., Meirelles Guimarães, S. M., Luigi Bragazzi, N., Bjorklund, M., Sofi-Mahmudi, A., Altujjar, M., Tian, M., Arcani, D. M. C. (2020). Novel coronavirus infection (COVID-19) in humans: A scoping review and meta-analysis. Journal of Clinical Medicine, 9(4), 941. https://doi.org/10.3390/jcm9040941.
Google Scholar | Crossref Brandén, M., Aradhya, S., Kolk, M., Härkönen, J., Drefahl, S., Malmberg, B., Rostila, M., Cederström, A., Andersson, G., Mussino, E. (2020). Residential context and COVID-19 mortality among adults aged 70 years and older in Stockholm: a population-based, observational study using individual-level data. The Lancet Healthy Longevity, 1(2), e80–e88. https://doi.org/10.1016/s2666-7568(20)30016-7.
Google Scholar | Crossref | Medline Centers for Disease Control and Prevention (2021). Older adults and COVID - 19. Centers for Disease Control and Prevention. https://www.cdc.gov/coronavirus/2019-ncov/need-extra-precautions/older-adults.html.
Google Scholar Chen, Y., Klein, S. L., Garibaldi, B. T., Li, H., Wu, C., Osevala, N. M., Li, T., Margolick, J. B., Pawelec, G., Leng, S. X. (2021). Aging in COVID-19: Vulnerability, immunity and intervention. Ageing Research Reviews, 65, 101205. https://doi.org/10.1016/j.arr.2020.101205.
Google Scholar | Crossref | Medline Cho, S. I., Yoon, S., Lee, H.-J. (2021). Impact of comorbidity burden on mortality in patients with COVID-19 using the Korean health insurance database. Scientific Reports, 11(1), 6375. https://doi.org/10.1038/s41598-021-85813-2.
Google Scholar | Crossref | Medline Covino, M., De Matteis, G., Polla, D. A. D., Santoro, M., Burzo, M. L., Torelli, E., Simeoni, B., Russo, A., Sandroni, C., Gasbarrini, A., Franceschi, F. (2021). Predictors of in-hospital mortality AND death RISK STRATIFICATION among COVID-19 PATIENTS aged ≥ 80 YEARs OLD. Archives of Gerontology and Geriatrics, 95, 104383. https://doi.org/10.1016/j.archger.2021.104383.
Google Scholar | Crossref | Medline Covino, M., De Matteis, G., Santoro, M., Sabia, L., Simeoni, B., Candelli, M., Ojetti, V., Franceschi, F. (2020). Clinical characteristics and prognostic factors in COVID‐19 patients aged ≥80 years. Geriatrics & Gerontology International, 20(7), 704–708. https://doi.org/10.1111/ggi.13960.
Google Scholar | Crossref | Medline De Smet, R., Mellaerts, B., Vandewinckele, H., Lybeert, P., Frans, E., Ombelet, S., Lemahieu, W., Symons, R., Ho, E., Frans, J., Smismans, A., Laurent, M. R. (2020). Frailty and mortality in hospitalized older adults with COVID-19: Retrospective observational study. Journal of the American Medical Directors Association, 21(7), 928–932.e921. https://doi.org/10.1016/j.jamda.2020.06.008.
Google Scholar | Crossref | Medline de Souza, C. D., de Arruda Magalhães, A. J., Lima, A. J., Nunes, D. N., de Fátima Machado Soares, É., de Castro Silva, L., Santos, L. G., Dos Santos Cardoso, V. I., Nobre, Y. V., do Carmo, R. F. (2020). Clinical manifestations and factors associated with mortality from COVID ‐19 in older adults: Retrospective population‐based study with 9807 older Brazilian COVID‐19 patients. Geriatrics & Gerontology International, 20(12), 1177–1181. https://doi.org/10.1111/ggi.14061.
Google Scholar | Crossref | Medline Deeb, A, Khawaja, K, Sakrani, N, AlAkhras, A, Al Mesabi, A, Trehan, R, Kumar, PC, Babiker, Z, Nagelkerke, N, Fru-Nsutebu, E (2021). Impact of ethnicity and underlying comorbidity on COVID-19 inhospital mortality: An observational study in Abu Dhabi, UAE. Biomed Research International, 2021, 6695707. https://doi.org/10.1155/2021/6695707.
Google Scholar | Crossref | Medline Ejiri, M., Kawai, H., Ishii, K., Oka, K., Obuchi, S. (2021). Predictors of older adults’ objectively measured social isolation: A systematic review of observational studies. Archives of Gerontology and Geriatrics, 94, 104357. https://doi.org/https://doi.org/10.1016/j.archger.2021.104357.
Google Scholar | Crossref | Medline Fagard, K., Gielen, E., Deschodt, M., Devriendt, E., Flamaing, J. (2021). Risk factors for severe COVID-19 disease and death in patients aged 70 and over: a retrospective observational cohort study. Acta Clinica Belgica, 1-8. https://doi.org/10.1080/17843286.2021.1890452.
Google Scholar Health, A G D O (2021). COVID-19 deaths by age group and sex. Health A G D O.
Google Scholar Heras, E., Garibaldi, P., Boix, M., Valero, O., Castillo, J., Curbelo, Y., Gonzalez, E., Mendoza, O., Anglada, M., Miralles, J. C., Llull, P., Llovera, R., Piqué, J. M. (2020). COVID-19 mortality risk factors in older people in a long-term care center. European Geriatric Medicine, 12(3), 601–607. https://doi.org/10.1007/s41999-020-00432-w.
Google Scholar | Crossref | Medline Joanna Briggs Institute (2017). Critical appraisal checklist for systematic reviews and research syntheses. Joanna Briggs Institute. https://doi.org/https://jbi.global/sites/default/files/2019-05/JBI_Critical_Appraisal-Checklist_for_Systematic_Reviews2017_0.pdf.
Google Scholar Kang, S.-J., Jung, S. I. (2020). Age-related morbidity and mortality among patients with COVID-19. Infection & Chemotherapy, 52(2), 154–164. https://doi.org/10.3947/ic.2020.52.2.154.
Google Scholar | Crossref | Medline Kiljunen, O, Välimäki, T, Kankkunen, P, Partanen, P (2017). Competence for older people nursing in care and nursing homes: An integrative review. International Journal of Older People Nursing, 12(3). https://doi.org/10.1111/opn.12146.
Google Scholar | Crossref | Medline La Vignera, S, Cannarella, R, Condorelli, RA, Torre, F, Aversa, A, Calogero, AE (2020). Sex-specific SARS-CoV-2 mortality: Among hormone-modulated ACE2 expression, risk of venous thromboembolism and hypovitaminosis D. International Journal of Molecular Sciences, 21(8), 2948. https://doi.org/10.3390/ijms21082948.
Google Scholar | Crossref Lee, JY, Kim, HA, Huh, K, Hyun, M, Rhee, JY, Jang, S, Kim, JY, Peck, KR, Chang, HH (2020). Risk factors for mortality and respiratory support in elderly patients hospitalized with COVID-19 in Korea. Journal of Korean Medical Science, 35(23), e223. https://doi.org/10.3346/jkms.2020.35.e223.
Google Scholar | Crossref | Medline Legris, P., Vaillard, L., Nonciaux, C., Hourdain, P., Taroux, M., Petit, J.-M., Vergès, B., Bouillet, B. (2021). Diabetes is not associated with COVID-19-related mortality in older institutionalized people. Diabetes & Metabolism, 47(3), 101235. https://doi.org/10.1016/j.diabet.2021.101235.
Google Scholar | Crossref | Medline Leung, C. (2020). Risk factors for predicting mortality in elderly patients with COVID-19: A review of clinical data in China. Mechanisms of Ageing and Development, 188, 111255. https://doi.org/10.1016/j.mad.2020.111255.
Google Scholar | Crossref | Medline Lithander, F. E., Neumann, S., Tenison, E., Lloyd, K., Welsh, T. J., Rodrigues, J. C. L., Higgins, J. P. T., Scourfield, L., Christensen, H., Haunton, V. J., Henderson, E. J. (2020). COVID-19 in older people: a rapid clinical review. Age and Ageing, 49(4), 501–515. https://doi.org/10.1093/ageing/afaa093.
Google Scholar | Crossref | Medline Martín-Jiménez, P., Muñoz-García, M. I., Seoane, D., Roca-Rodríguez, L., García-Reyne, A., Lalueza, A., Maestro, G., Folgueira, D., Blanco-Palmero, V. A., Herrero-San Martín, A., Llamas-Velasco, S., Pérez-Martínez, D. A., González-Sánchez, M., Villarejo-Galende, A. (2020). Cognitive impairment is a common comorbidity in deceased COVID-19 patients: A hospital-based retrospective cohort study. Journal of Alzheimer’s Disease, 78(4), 1367–1372. https://doi.org/10.3233/jad-200937.
Google Scholar | Crossref | Medline Mendes, A., Serratrice, C., Herrmann, F. R., Genton, L., Périvier, S., Scheffler, M., Fassier, T., Huber, P., Jacques, M.-C., Prendki, V., Roux, X., Di Silvestro, K., Trombert, V., Harbarth, S., Gold, G., Graf, C. E., Zekry, D. (2020). Predictors of In-Hospital Mortality in Older Patients With COVID-19: The COVIDAge Study. Journal of the American Medical Directors Association, 21(11), 1546–1554. https://doi.org/10.1016/j.jamda.2020.09.014.
Google Scholar | Crossref | Medline Moher, D., Liberati, A., Tetzlaff, J., Altman, D. G. (2009). Preferred Reporting Items for Systematic Reviews and Meta-Analyses: The PRISMA Statement. Journal of Clinical Epidemiology, 62(10), 1006–1012. https://doi.org/https://doi.org/10.1016/j.jclinepi.2009.06.005.
Google Scholar | Crossref | Medline | ISI Moradi, F., Enjezab, B., Ghadiri-Anari, A. (2020). The role of androgens in COVID-19. Diabetes & Metabolic Syndrome: Clinical Research & Reviews, 14(6), 2003–2006. https://doi.org/10.1016/j.dsx.2020.10.014.
Google Scholar | Crossref | Medline Mueller, A. L., McNamara, M. S., Sinclair, D. A. (2020). Why does COVID-19 disproportionately affect older people? Aging, 12(10), 9959–9981. https://doi.org/10.18632/aging.103344.
Google Scholar | Crossref | Medline Naaraayan, A, Nimkar, A, Hasan, A, Pant, S, Durdevic, M, Elenius, H, Nava Suarez, C, Jesmajian, S (2020). Analysis of male sex as a risk factor in older adults with Coronavirus disease 2019: A retrospective cohort study from the New York City Metropolitan region. Cureus, 12(8), e9912. https://doi.org/10.7759/cureus.9912.
Google Scholar | Medline Navar, A. M., Purinton, S. N., Hou, Q., Taylor, R. J., Peterson, E. D. (2021). The impact of race and ethnicity on outcomes in 19,584 adults hospitalized with COVID-19. PLoS One, 16(7), e0254809. https://doi.org/10.1371/journal.pone.0254809.
Google Scholar | Crossref | Medline Owen, R. K., Conroy, S. P., Taub, N., Jones, W., Bryden, D., Pareek, M., Faull, C., Abrams, K. R., Davis, D., Banerjee, J. (2021). Comparing associations between frailty and mortality in hospitalised older adults with or without COVID-19 infection: a retrospective observational study using electronic health records. Age and Ageing, 50(2), 307–316. https://doi.org/10.1093/ageing/afaa167.
Google Scholar | Crossref | Medline Page, M. J., McKenzie, J. E., Bossuyt, P. M., Boutron, I., Hoffmann, T. C., Mulrow, C. D., Shamseer, L., Tetzlaff, J. M., Moher, D. (2021). Updating guidance for reporting systematic reviews: development of the PRISMA 2020 statement. Journal of Clinical Epidemiology, 134, 103–112. https://doi.org/10.1016/j.jclinepi.2021.02.003.
Google Scholar | Crossref | Medline Peinemann, F., Tushabe, D. A., Kleijnen, J. (2013). Using multiple types of studies in systematic reviews of health care interventions – a systematic review. PLoS One, 8(12), e85035. https://doi.org/10.1371/journal.pone.0085035.
Google Scholar | Crossref | Medline | ISI Pesola, G. R., Ahsan, H. (2016). Dyspnea as an independent predictor of mortality. The Clinical Respiratory Journal, 10(2), 142–152. https://doi.org/10.1111/crj.12191.
Google Scholar | Crossref | Medline Rosenbaum, L. (2020). Facing covid-19 in Italy – ethics, logistics, and therapeutics on the Epidemic’s Front Line. The New England Journal of Medicine, 382(20), 1873–1875. https://doi.org/10.1056/NEJMp2005492.
Google Scholar | Crossref | Medline Saragih, I. D., Saragih, I. S., Batubara, S. O., Lin, C.-J. (2021). Dementia as a mortality predictor among older adults with COVID-19: A systematic review and meta-analysis of observational study. Geriatric Nursing, 42(5), 1230–1239.