Anxiety is a common psychological problem among adolescents and may affect
sleep quality. Poor sleep quality in students can reduce learning concentration,
academic performance, and overall physical and mental health. This study aimed
to determine the relationship between anxiety levels and sleep quality among
eleventh-grade students at SMAN 1 Ubud. This study employed a quantitative
design with a descriptive correlational approach and a cross-sectional method.
The population consisted of 383 eleventh-grade students, with 196 respondents
selected using a random sampling technique. Data were collected using the Zung
Self-Rating Anxiety Scale (ZSAS) to measure anxiety levels and the Pittsburgh
Sleep Quality Index (PSQI) to assess sleep quality. Data analysis was performed
using the Spearman Rank correlation test with a significance level of α = 0.05. The
results of the study indicate that the majority of students are at a normal level of
anxiety and have good sleep quality. Statistical analysis indicated a significant
relationship between anxiety levels and sleep quality (p < 0.05). In conclusion,
higher anxiety levels are associated with poorer sleep quality among students.
These findings are expected to support the development of community nursing
interventions and school health programs aimed at improving adolescents’ mental
health and sleep quality.