Table 2. Comparative studies of delirium tremens.

DT: delirium tremens; AOR: odds ratio for age

	Author (Year)		Type of Study	Country	Population Studied	Results of Those Who Developed DT	Risk Factors
Study 1	Pribék (2023) [41]		Retrospective study	Hungary	1,591 patients and 2,900 hospital visits	Incidence: 36.8%	Higher mean age, comorbid somatic disorders, and lower temperatures in March
Study 2	Joshi (2021) [42]		Cross-sectional study	Nepal	105 patients with alcohol withdrawal syndrome	Prevalence: 69.52%	Middle-aged, illiterate, manual laborers. Consumptions of homemade alcohol and medical comorbidities
Study 3	Paudyal (2020) [43]		Case-control study	Nepal	Alcohol-dependent patients	24% patients developed DT odds ratio: age >50 years old, AOR=75.7, 95% (CI=7.8-730); alcohol consumption >20 years, AOR=305, 95% (CI=3.4-2711); 48-72 hours since the last intake of alcohol AOR=923, 95% (CI=38-22333)	Older age, longer duration of alcohol intake, and longer time interval since last alcoholic drink
Study 4	Teetharatkul (2018) [44]		Cross-sectional study	Thailand	Alcohol-dependent patients	Prevalence: 28.0%	Red blood cell count <4.5x106/ul (p-value<0.001)
Study 5	Moore (2017) [45]		Retrospective study	United States of America	345,297 veterans with alcohol use disorder (AUD)	Incidence: 0.7%	Homelessness, comorbid disorders, health service utilization