Table 4.

Multivariate Relations^** between Chronic Insomnia and Functioning (Odds Ratio and Confidence Intervals)

Chronic Insomnia	Somatic Problems, W2 (n=3108)			Interpersonal Problems, W2 (n=3087)			Psychological Problems, W2 (n=3131)			Substance Use, W2 (n=3134)		Activities, W2 (n=3086)
	OR, 95% C.I.			OR, 95% C.I.			OR, 95% C.I.			OR, 95% C.I.		OR, 95% C.I.
	Perceived Health	Limitations	Impact of Illness	Problems at Home	Problems with Peers	Problems at school	Life Satisfaction	Perceived Mental Health	Depressed Mood	Alcohol Use	Other Drug Use	School Work	School Activities	Job
P1	1.63†	1.31	1.63†	1.98†	1.32	2.07†	3.25†	2.73†	2.00†	1.27	1.33	2.21†	2.45†	2.73†
	(1.02–2.60)	(0.99–1.31)	(1.23–2.16)	(1.47–2.66)	(0.86–2.02)	(1.50–2.85)	(2.37–4.44)	(1.97–3.77)	(1.52–2.64)	(0.88–1.85)	(0.82–2.14)	(1.58–3.07)	(1.73–3.47)	(1.75–4.26)
P2	2.62†	2.76†	3.11†	5.02†	1.49	1.74	3.58†	4.95†	2.74†	1.70	1.30	2.67†	2.48†	2.71†
	(1.02–6.71)	(1.30–2.76)	(1.57–6.14)	(4.00–6.30)	(0.61–3.66)	(0.86–3.54)	(1.78–7.20)	(2.45–9.97)	(1.44–5.21)	(0.83–3.48)	(0.45–3.76)	(1.46–4.88)	(1.23–5.01)	(1.07–6.84)
P3	2.08	2.46	3.47†	2.03†	2.67	3.17†	4.32†	5.30†	2.80†	0.64	0.23	2.25†	2.82†	3.90†
	(0.63–6.86)	(0.82–2.46)	(1.50–8.04)	(1.10–3.75)	(0.96–7.41)	(1.33–7.58)	(1.74–10.70)	(1.92–14.61)	(1.22–6.44)	(0.23–1.75)	(0.03–1.78)	(1.07–4.72)	(1.18–6.77)	(1.23–12.38)

^**Adjusting for Wave 1 values of functioning problems, age, gender, ethnicity, family income, puberty status, and perceived body weight.

P1= Chronicity of One or More Symptoms

P2= Chronicity of At Least One Symptom plus Daytime Fatigue or Sleepiness or Both

P3= Chronicity of P2_c plus Exclusion for Mood, Anxiety and Substance Use Disorders

^†Odds ratios are statistically significant (P<0.05) using logistic regression analyses.