Corrigendum: Impact of cerebrovascular stroke on inflammatory periodontal indices: a systematic review with meta-analysis and trial sequential analysis of case-control studies

Mario Dioguardi ¹ Maria Eleonora Bizzoca ¹ Stefania Cantore ^2* Giorgia Apollonia Caloro ³ Gennaro Musella ¹ Filiberto Mastrangelo ¹ Lorenzo Lo Muzio ¹ Andrea Ballini ¹

• ¹ University of Foggia, Foggia, Apulia, Italy
• ² University of Campania Luigi Vanvitelli, Caserta, Italy
• ³ 1. Unità Operativa Nefrologia e Dialisi, Presidio Ospedaliero Scorrano, ASL (Azienda Sanitaria Locale) Lecce, Via Giuseppina Delli Ponti, 73020, Scorrano, Italy; (G.A.C.), Lecce, Emilia-Romagna, Italy

In the published article, there was an error in figure 2, 3, 4, 5, 6 as published. In the forest plot images (figures 2,3,4,5,6) representing the results of the meta-analysis that have been published, the Fixed effects have been applied unlike the Random effects as described in the captions and in the manuscript. The corrected [figure 2,3,4,5,6] and its caption FIGURE 2 correct. Forest plot of clinical attachment loss, mean difference: 1.04 95% CI [0.54, 1.54], Tau 2 = 0.29, Higgins heterogeneity index I 2 = 88, Chi 2 = 42.30, df (degrees of freedom) 5, P value < 0.00001, test for overall effect: Z = 4.05 (P < 0.0001) Weights: Abolfazli et al., 201115.6%, Diouf et al. 201520.3%, Dörfer et al. 200421.6%, Ghizoni et al. 20124.8%, Leira et al. 20162.40%, Pradeep et al. 2010 20.7%.the graph for each study included shows the first author, the date of publication, the number of patients with stroke and control, the average clinical attack loss in the two groups with the standard deviation (SD), the mean difference, the weight of the study on the meta-analysis. The final effect of the single study is expressed in a green square with the related confidence intervals (black line crossing the square) while the final effect of the meta-analysis is depicted by the black diamond whose width is given by the confidence intervals FIGURE 3 correct. Sensitivity analysis, clinical attachment loss forest plot of the random effects model of the meta-analysis, exclusion of Leira et al., 2016 data FIGURE 4 correct.. Forest plot of probing pocket depth, mean difference: 0.68 95% CI [0.31, 1.06], Tau 2 = 0.14, Higgins heterogeneity index I 2 = 90, Chi 2 = 41.58, df (degrees of freedom) 4, P value < 0.00001, test for overall effect: Z = 3.56 (P < 0.0004) weights: Diouf et al., 201525.2%, Dörfer et al., 200425.4%, Ghizoni et al., 20127.9%, Leira et al., 201618.6%, Pradeep et al., 2010 22.9%.The graph for each study included shows the first author, the date of publication, the number of patients with stroke and control, the average clinical attack loss in the two groups with the standard deviation (SD), the mean difference, the weight of the study on the meta-analysis. The final effect of the single study is expressed in a green square with the related confidence intervals (black line crossing the square) while the final effect of the meta-analysis is depicted by the black diamond whose width is given by the confidence intervals. , the graph for each study included shows the first author, the date of publication, the number of patients with stroke and control, the average clinical attack loss in the two groups with the standard deviation (SD), the mean difference, the weight of the study on the meta-analysis. The final effect of the single study is expressed in a green square with the related confidence intervals (black line crossing the square) while the final effect of the meta-analysis is depicted by the black diamond whose width is given by the confidence intervals. ORIGINAL Figure2, 3, 4, 5, 6 appear below. .the graph for each study included shows the first author, the date of publication, the number of patients with stroke and control, the average clinical attack loss in the two groups with the standard deviation (SD), the mean difference, the weight of the study on the meta-analysis. The final effect of the single study is expressed in a green square with the related confidence intervals (black line crossing the square) while the final effect of the meta-analysis is depicted by the black diamond whose width is given by the confidence intervals The graph for each study included shows the first author, the date of publication, the number of patients with stroke and control, the average clinical attack loss in the two groups with the standard deviation (SD), the mean difference, the weight of the study on the meta-analysis. The final effect of the single study is expressed in a green square with the related confidence intervals (black line crossing the square) while the final effect of the meta-analysis is depicted by the black diamond whose width is given by the confidence intervals.FIGURE 5 Sensitivity analysis, probing pocket depth forest plot of the random effects model of the metaanalysis, exclusion of Leira et al., 2016 data FIGURE 6 Forest plot of radiological bone loss, mean difference: 2.15 95% CI [-1.58, 5.89], Tau 2 = 6.21, Higgins heterogeneity index I 2 = 83, Chi 2 = 6.02, df (degrees of freedom) 1, P value = 0.01, test for overall effect: Z = 1.13 (P = 0.26) weights: Dörfer et al., 200458.2%, Lafon et al., 2014 41.8%, the graph for each study included shows the first author, the date of publication, the number of patients with stroke and control, the average clinical attack loss in the two groups with the standard deviation (SD), the mean difference, the weight of the study on the meta-analysis. The final effect of the single study is expressed in a green square with the related confidence intervals (black line crossing the square) while the final effect of the meta-analysis is depicted by the black diamond whose width is given by the confidence intervals.The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.