Fig. 1
Step-by-step representation of statistical analyses employed in the study. Legend: *Demographic and Clinical Parameters determined from Mutch et al. 2022 [5] “Performance status: A key factor in predicting mortality in the first wave of COVID-19 in South-East Scotland”. Demographic parameters = Age (in years), sex; Clinical parameters = Performance Status (WHO Standardized Categories); Admission pulse rate (in beats/minute); Haemoglobin concentration (in grams/Litre); Neutrophil count (cells × 105); Lymphocyte count (cells × 105); Creatinine (in milligrams/decilitre). SIMD score = quintile distribution; 12 relevant SIMD indicators = Income Deprivation Rate; Employment Deprivation Rate; Comparative Illness Factor; Hospital stays related to alcohol use; Hospital stays related to drug use; Standardised Mortality Ratio; Proportion of population prescribed drugs for anxiety, depression, and/or psychosis; Emergency stays in hospital; Proportion of working age population with no higher qualifications; Drive to GP (in minutes); Public Transport to GP (in minutes); Overcrowding rate (Scottish Index of Multiple Deprivation (2020, version 2)). ** Variables had P < 0.157 in the univariable analysis. P < 0.157 selected as a screening value appropriate for subsequent multivariable model selection by Akaike Information Criterion (AIC) with a study population of 710. (Timo and Ilkka 1986; Perez-Guzman et al. 2021)