The role of ethnic differences, structural background and process characteristics in the family in preschool children’s language proficiency

Whereas recent research has shown a positive correlation between stimulating family activities and children’s skills, little is known about the mediating role of the parenting style in the effect of the familial socioeconomic status (SES) and the influence of the family language on children’s language proficiency. Our aim is to investigate the impact of structural and process characteristics in the family on children’s language proficiency. Our sample comprises 314 six-year-old children with and without a migration background. The results of a path analysis via multiple linear regressions reveal parenting style as a mediator of family structural background. Structural equation models demonstrate that in native German families the SES explains children’s verbal skills, whereas in migrant families stimulating activities are more important. Furthermore, parenting style influences verbal skills independently of the family language. This is of methodological relevance as in operationalisations parenting style is often insufficiently differentiated from stimulating activities

Candida species detection in patients with chronic periodontitis: A systematic review and meta‐analysis

Abstract Objectives To assess the Candida species occurrence rate and concentration in periodontal pockets in chronic periodontitis (CP) by meta‐analysis. Materials and Methods A search was performed of articles published between January 1, 2010, and October 1, 2020, in English and in Russian, in the electronic databases MEDLINE‐PubMed, Google Scholar, The Cochrane Library, ClinicalTrials.gov, Research Gate, eLIBRARY, and Cyberleninka (PROSPEROCRD42021234831). The odds ratio (OR), standardized mean difference (SMD), and 95% confidence interval (CI) were calculated using Review Manager 5.4.1 to compare the risk of CP when Candida spp. were detected in the gingival sulcus or periodontal pocket and to compare Candida spp. density counts in patients with CP and periodontally healthy patients. Results Twenty‐six studies were included in the systematic review and 11 were included in the meta‐analysis. The results showed that Candida spp. may increase the chance of CP development by 1.76 times (OR = 1.76; 95% CI = 1.04–2.99; Z = 2.10; p = .04; I2 = 61%). More Candida spp. were found in patients with CP than in periodontally healthy patients (SMD = 1.58; 95% CI = 0.15−3.02; p = .03; I2 = 98%). No data were found relating to the statistically significant influence of Candida glabrata, Candida krusei and Candida tropicalis on CP development. Conclusion We found that Candida albicans insignificantly increased the risk of CP development but, due to the heterogeneity of the included studies, further research is necessary to determine the exact role of Candida spp. in the development and course of the inflammatory periodontal diseases