Prevalence Of Digital Ridge And Palmar Crease Pattern Types And Associated Factors Among High School Students In Dessie Town Northeast Ethiopia.

Introduction: The term dermatoglyphics is composed of two Greek words, “derma” and “glyphic”rnmeaning skin and curves respectively. It indicates the study of the epidermal ridge configurationrnon the fingers, palms and soles. Palmar creases or lines are epidermal flexure lines present onrnpalmar surface of the hands .These are unique, permanent and genetically controlledrnmorphological variables. Dermatoglyphics and palmar creases are important tools for diagnosis ofrncongenital diseases, personal identification, and criminal investigations. rnObjective: This study aims to assess prevalence and associated factors of digital ridge and palmarrncrease pattern types, among high school students in Dessie town, Northeast Ethiopia. rnMethods and materials: A cross- sectional survey qualitative and quantitative study wasrnconducted. Systematic random sampling technique was used to select study subjects. The data wasrncollected using self-administer structured questionnaires and by observational checklist afterrntaking photograph of fingers and palms of students. A Pearson chi-square test, Independent t-test,rnbivariable and multivariable multinomial logistic regression models were employed using SPSSrn(version 20). Significance was set at p value less than 0.05. rnResults: : Most of the study participants had loop type digital ridge pattern which accounts 60.2%,rnwhereas whorl and arch types accounted 32.2% and 7.6% respectively. Females were less likelyrnto have arch pattern (AOR=0.57; 95%CI: 0. 40, 0.82) and loop pattern (AOR=0.69; 95%CI: 0.61,rn0.8) than whorl pattern, when the rest variables are kept constant. Being right hand had higherrnloop pattern (AOR=1.19; 95%CI: 1.04, 1.36) than whorl pattern. The mean difference of ridgerncount was significantly higher among male students (0.005) and whorl pattern types (0.001).rnAmong variant palmar crease types Simian crease pattern (5.9%) was the most common followedrnby Suwon crease pattern (3.5%), and Sydney crease pattern was the least (2.7%). Normal palmarrncrease was significantly higher among females but variant palmar creases are significantly higherrnamong males (0.03). rnConclusion: The loop type was the most prevalent type of digital ridge pattern. The mean of ridge rncount of male was higher than female students. Among the palmar crease pattern, Normal crease rnpattern was the most prevalent type and the common type among the variant palmar crease patternsrnwas Simian crease.

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