Fig. 2
Associations between participants’ characteristics and cognitive impairment. CI confidence interval, OR odds ratio. aMedian age of all participants is 58 years. bMedian education of all participants is 10 years. cMedian number of comorbidities is 4. d20 g/day is the threshold for acceptable consumption in males younger than 65 years; 10 g/day is the threshold for all females and males aged 65 or older. eBody mass index categories of the World Health Organization. fThe cutoff of 11 in the Hospital Anxiety and Depression Scale anxiety/depression subscale was used to classify symptom levels. gThe cutoff of 5 in the Pittsburgh Sleep Quality Index scale was used to classify sleep quality. hParticipants grouped based on hospitalization and SARS-CoV-2 infection status between March 2020 and February 2021: group #1—hospitalized due to COVID-19; group #2—uninfected, hospitalized; group #3—infected, non-hospitalized; group #4—uninfected, non-hospitalized. iSelf-reported episode of COVID-19 after at least 14 days of complete primary scheme of vaccination (in groups #2 and #4). jLogistic regression models A to G include the dependent outcome variable “cognitive impairment”, the independent variable “Exposure” and the following covariates, as potential confounders of the association between the exposure variable and the outcome variable: A—no covariates’ B—sex, age; C—sex, education, and comorbidities; D—sex and education; E—sex, age, and education; F—comorbidities, education, anxiety and depression symptoms, poor sleep, body mass index, employment, and smoking; G—sex, age, education, comorbidities.
