SLEEP 2011 Abstract Supplement

B. Clinical Sleep Science XI. Pediatrics
school students were related to sleep disorders, sleep habits, and sleepiness
during class.
Methods: 761 adolescents (13-19 years old) completed a questionnaire
on sleep habits, sleep disturbances, excessive daytime sleepiness (EDS),
the Brief Screen for Depression (BSD), and the Costello-Comrey Anxiety
Scale (CCAS). Correlations were performed between the global
scores on the BSD and CCAS and: total sleep time (TST) during school
nights (SN) and weekend nights (WN), bedtimes during SN and WN,
sleep disorders, sleep initiation difficulties, and EDS.
Results: There were significant correlations between BSD and CCAS
scores and: TST during SN (BSD: r =-0.168, p< 0.01; CCAS: r =-0.116,
p< 0.01), bedtimes during WN (BSD: r =0.121, p< 0.01; CCAS: r
=0.113, p< 0.01), sleep disorders (BSD: r =0.413, p< 0.01; CCAS: r
=0.413, p< 0.01), sleep initiation difficulties (BSD: r =0.383, p< 0.01;
CCAS: r =0.321, p< 0.01), and EDS (BSD: r =0.438, p< 0.01; CCAS:
r =0.398, p< 0.01). There were modest yet statistically significant correlations
between BSD and CCAS scores and TST during WN (BSD: r
=-0.090, p< 0.05; CCAS: r =-0.081, p< 0.05), and between BSD scores
and bedtimes during SN (r =0.081, p< 0.05).
Conclusion: These results suggest that depressive and anxious symptoms
might be strongly associated with sleep changes in adolescents.
More specifically, extreme evening type (reflected by later bedtimes
during WN), sleep debt (reflected by lower sleep duration on SN and
EDS), and sleep disorders (reflected by higher sleep disturbances and
sleep initiation difficulties) seem to be closely related to manifestations
of depression and anxiety in teenagers.
0809
CHILDHOOD TRAUMA AND DEPRESSIVE SYMPTOMS ARE
ASSOCIATED WITH IRREGULARITY OF SLEEP PATTERNS
IN ADOLESCENTS
Baddam S, Olvera RL, Williamson DE
University of Texas Health Science Center San Antonio, San Antonio,
TX, USA
Introduction: During adolescence, the development of sleep architecture
crystallizes and begins to transition into adult-like patterns. Sleep
restriction, poor sleep quality, and eveningness preference all have been
associated with depressive symptoms in adolescence. We hypothesized
that depressive symptoms and childhood trauma would each be independently
associated with sleep irregularity in a community sample of
adolescents ascertained from the greater San Antonio metropolitan area.
Methods: We recruited 996 adolescents: Gender: (Male:Female -
513:481), Race: (White:Hispanic:Others - 507:340:149) and Age
(13.4±1.05). Sleep irregularity was measured by 7 likert-type questions
assessing regularity of bedtimes, wake times, sleep duration and sleepiness
via the Dimensions of Temperament Survey (DOTS). An overall
sleep irregularity score was calculated. The Mood and Feelings Questionnaire
(MFQ) assessed depressive symptoms during the prior twoweek
period. The Childhood Trauma Questionnaire (CTQ) assessed
abuse and neglect covering childhood and adolescence. Data were analyzed
using univariate ANOVAs in SPSS. The overall sleep irregularity
score derived from the DOTS was the dependent variable. The predictors
were total MFQ and CTQ scores controlling for age, sex, and race.
Results: The total MFQ score (F(1,989)=11.03, p=.001) and total CTQ
score (F(1,989)=12.57, p=.000) independently predicted the overall
sleep irregularity score. Gender had a significant main effect on the regularity
of sleep (F(1,989)=3.92, P