TY - JOUR
T1 - Prognostic factors for adverse outcomes in patients with COVID-19
T2 - a field-wide systematic review and meta-analysis
AU - Bellou, Vanesa
AU - Tzoulaki, Ioanna
AU - van Smeden, Maarten
AU - Moons, Karel G M
AU - Evangelou, Evangelos
AU - Belbasis, Lazaros
N1 - Funding Information:
VB is supported by PhD scholarship funded by the Greek State Scholarships Foundation.
Publisher Copyright:
© 2022 European Respiratory Society. All rights reserved.
PY - 2022/2/1
Y1 - 2022/2/1
N2 - Introduction: The individual prognostic factors for COVID-19 are unclear. For this reason, we aimed to present a state-of-the-art systematic review and meta-analysis on the prognostic factors for adverse outcomes in COVID-19 patients. Methods: We systematically reviewed PubMed from January 1, 2020 to July 26, 2020 to identify non-overlapping studies examining the association of any prognostic factor with any adverse outcome in patients with COVID-19. Random-effects meta-analysis was performed, and between-study heterogeneity was quantified using I2 metric. Presence of small-study effects was assessed by applying the Egger's regression test. Results: We identified 428 eligible articles, which were used in a total of 263 meta-analyses examining the association of 91 unique prognostic factors with 11 outcomes. Angiotensin-converting enzyme inhibitors, obstructive sleep apnea, pharyngalgia, history of venous thromboembolism, sex, coronary heart disease, cancer, chronic liver disease, chronic obstructive pulmonary disease, dementia, any immunosuppressive medication, peripheral arterial disease, rheumatological disease and smoking were associated with at least one outcome and had <1000 events, P-value <0.005, I2 <50%, 95% prediction interval excluding the null value, and absence of small-study effects in the respective meta-analysis. The risk of bias assessment using the Quality In Prognosis Studies tool indicated high risk of bias in 302 of 428 articles for study participation, 389 articles for adjustment for other prognostic factors, and 396 articles for statistical analysis and reporting. Conclusions: Our findings could be used for prognostic model building and guide patients' selection for randomized clinical trials.
AB - Introduction: The individual prognostic factors for COVID-19 are unclear. For this reason, we aimed to present a state-of-the-art systematic review and meta-analysis on the prognostic factors for adverse outcomes in COVID-19 patients. Methods: We systematically reviewed PubMed from January 1, 2020 to July 26, 2020 to identify non-overlapping studies examining the association of any prognostic factor with any adverse outcome in patients with COVID-19. Random-effects meta-analysis was performed, and between-study heterogeneity was quantified using I2 metric. Presence of small-study effects was assessed by applying the Egger's regression test. Results: We identified 428 eligible articles, which were used in a total of 263 meta-analyses examining the association of 91 unique prognostic factors with 11 outcomes. Angiotensin-converting enzyme inhibitors, obstructive sleep apnea, pharyngalgia, history of venous thromboembolism, sex, coronary heart disease, cancer, chronic liver disease, chronic obstructive pulmonary disease, dementia, any immunosuppressive medication, peripheral arterial disease, rheumatological disease and smoking were associated with at least one outcome and had <1000 events, P-value <0.005, I2 <50%, 95% prediction interval excluding the null value, and absence of small-study effects in the respective meta-analysis. The risk of bias assessment using the Quality In Prognosis Studies tool indicated high risk of bias in 302 of 428 articles for study participation, 389 articles for adjustment for other prognostic factors, and 396 articles for statistical analysis and reporting. Conclusions: Our findings could be used for prognostic model building and guide patients' selection for randomized clinical trials.
KW - Bias
KW - COVID-19
KW - Humans
KW - Prognosis
KW - SARS-CoV-2
UR - http://www.scopus.com/inward/record.url?scp=85124052722&partnerID=8YFLogxK
U2 - 10.1183/13993003.02964-2020
DO - 10.1183/13993003.02964-2020
M3 - Review article
C2 - 34172467
SN - 0903-1936
VL - 59
JO - The European respiratory journal
JF - The European respiratory journal
IS - 2
M1 - 2002964
ER -