Objectives-To compare sickness absence among diabetic and non-diabetic employees. Methods-A cross sectional case-control study was conducted in a random sample of 400 diabetic employees 21-50 years old from Ljubljana that compared their sickness absence in the year 1996 with sickness absence of non-diabetic employees matched by sex, age, and occupation. Sickness absence was compared in total and also in subgroups formed by sex, age, occupation, and disability.
Nonparametric statistics were used ( 2 test, Wilcoxon matched pairs test).Results-The randomised sample consisted of 61.2% of men (245) and 38.8% of women (155) with a mean age of 42.5 years. Unskilled workers made up 30.2% of employees, and less than 16.4% were highly educated. Among diabetic employees there were 7.0% disabled and among non-diabetic employees 2.0%. The mean frequency of sickness absences of diabetic employees was 0.89 times in the year 1996 (95% confidence interval (95% CI) 0.70 to 1.08), and of non-diabetic employees 0.56 times (95% CI 0.47 to 0.65), p=0.01. The mean total duration of sickness absence of diabetic employees was 31.71 days (95% CI 24.86 to 38.57), of non-diabetic employees 16.57 days (95% CI 11.72 to 21.42), p<0.01. DiVerences were also found in subgroups but the size of subgroups was not suYcient to detect significant diVerences. Conclusions-The study confirmed that diabetes aVects the ability to work. Appropriate work and good control of the disease are important to prevent long term complications. (Occup Environ Med 2001;58:432-436)