Background:Stress is a major cause of mental disorders including depression and anxiety. Stress can be recognized by many wrong things including sleep patterns associated with the circadian rhythm of someone with a term of a person or called a chronotype. Teenagers are the age of the chronotype shifting from moerningtype into eveningtype. Additionally, lack of rest on school day can reduce the difference in the amount of rest time on weekdays and holidays or so-called social jet lag because of the body's biological clock mismatch with social clock. This study takes the subject of research of high school students because of the age of adolescents is identical to the chronotype changes and also social increase.
Objective: Analyzing the influence of chronotypes and social jetlag on stress level in SMA Negeri Colomadu students.
Research method : This research method is analytic observasional with cross sectional design. The sample size is 71 students with purposive sampling technique.The analysis using Chi-square hypothesis test then conducted multivariate analysis using regression test.
Result: Based on data analysis with Chi-Square there is chronotype effect to stress level with significance 0,000 (P <0,025) and there is influence of social jet lag to stress level with significance 0,017 (P <0,025). Then done logistic regression analysis got significant value of kronotipe to stress level got OR 5,103 (P = 0,004). While the result of logistic regression on jet lag social to stress level got OR 5,633 (P = 0,118) so that considered not significant.
Conclusion: The results showed that chronotypes had an effect on the stress level
