Table 2.
—Prevalence and Symptoms of Insomnia in Hypertension and Cardiovascular Disease
Authors/Year | Insomnia Definition | Measures | Sample | Results |
Taylor et al12/2007 | Research diagnostic criteria for chronic insomnia (consistent with DSM-IV criteria) | Sleep diary for 14 d; health survey | 772 community-dwelling individuals in Tennessee contacted through stratified random sampling. Sampled at a rate of 50 men and 50 women for each decade of life from 20 to ≥80 y | Hypertension: 44% met criteria for insomnia; 43% of patients with insomnia had hypertension. Heart disease: 44% met criteria for insomnia; 22% of patients with insomnia had heart disease. |
Redeker et al33/2010 | Difficulty initiating and maintaining sleep or waking too early; frequency of problem often or almost always | Sleep Habits Questionnaire; Pittsburgh Sleep Quality Index | 173 patients with stable heart failure from the northeastern United States. Mean age, 60.3 y; 65% men | Fifty-one percent of sample met insomnia definition (47% maintaining sleep, 42% falling asleep, 24% waking too early). No effect of demographic or medical characteristics was found. |
Cross et al34/2010 | Not defined | Actigraphy; self-report diary | 30 patients with ICDs; 30 patients with CAD. Mean age, 66.9 y; 61.5% men | Both groups had an average of >31 min of self-report sleep onset latency; patients with ICDs averaged >31 min of self-report wake after sleep onset. Both groups had an average of >31 min of actigraphic wake after sleep onset; patients with CAD averaged >31 min on actigraphic sleep onset latency. |
Budhiraja et al32/2011 | DSM-IV criteria for insomnia | Self-report sleep questionnaire; polysomnography | 3,247 community-dwelling adults in Michigan with a variety of comorbid medical conditions. Mean age, 41.7 y; 49.2% men | Hypertension: 24.7% met criteria for insomnia; 42.4% had a sleep efficiency <25th percentile of healthy individuals. Heart disease: 26.8% met criteria for insomnia; 62.8% had a sleep efficiency <25th percentile of healthy individuals. |
CAD = coronary artery disease; DSM-IV = Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition; ICD = implantable cardioverter-defibrillator.