STUDY DESIGN: A prospective cohort study. OBJECTIVE: To study the relationship of sleep disturbances with severe back disorders leading to hospitalization. SUMMARY OF BACKGROUND DATA: Sleep disturbances are associated with persistent pain syndromes, but little is known about their relationship with back disorders. METHODS: The first hospital admission for back disorders from 1973 to 2000 was studied in a cohort of metal industry workers (n = 902). The occurrence of sleep disturbances at baseline was categorized as: none; 1 type (either difficulties in falling asleep/waking up at night or nightmares); or both types. Cox proportional hazards regression was used to estimate the time between the assessment of risk factors and first hospital admission for back disorders. RESULTS: Those individuals who had 1 type of sleep disturbance had a 2.1-fold (95% confidence interval 1.1-3.8) risk of back-related hospitalization, and those with both types of disturbance a 2.4-fold (1.2-4.6) risk, compared with those with no sleep disturbances. The hazard ratios were 2.1; 1.0-4.6 and 2.9; 1.2-7.1, respectively, when patients with chronic back disease or recurrent back symptoms at baseline were excluded from the analyses. CONCLUSION: These findings suggest that sleep disturbances are predictive of hospitalization for back disorders. The mechanism underlying this association warrants further study.
STUDY DESIGN: A prospective cohort study. OBJECTIVE: To study the relationship of sleep disturbances with severe back disorders leading to hospitalization. SUMMARY OF BACKGROUND DATA: Sleep disturbances are associated with persistent pain syndromes, but little is known about their relationship with back disorders. METHODS: The first hospital admission for back disorders from 1973 to 2000 was studied in a cohort of metal industry workers (n = 902). The occurrence of sleep disturbances at baseline was categorized as: none; 1 type (either difficulties in falling asleep/waking up at night or nightmares); or both types. Cox proportional hazards regression was used to estimate the time between the assessment of risk factors and first hospital admission for back disorders. RESULTS: Those individuals who had 1 type of sleep disturbance had a 2.1-fold (95% confidence interval 1.1-3.8) risk of back-related hospitalization, and those with both types of disturbance a 2.4-fold (1.2-4.6) risk, compared with those with no sleep disturbances. The hazard ratios were 2.1; 1.0-4.6 and 2.9; 1.2-7.1, respectively, when patients with chronic back disease or recurrent back symptoms at baseline were excluded from the analyses. CONCLUSION: These findings suggest that sleep disturbances are predictive of hospitalization for back disorders. The mechanism underlying this association warrants further study.
Authors: Claudia M Campbell; Sara C Bounds; Mpepera B Simango; Kenneth R Witmer; James N Campbell; Robert R Edwards; Jennifer A Haythornthwaite; Michael T Smith Journal: Eur J Pain Date: 2010-12-30 Impact factor: 3.931
Authors: Juha P Auvinen; Tuija H Tammelin; Simo P Taimela; Paavo J Zitting; Marjo-Riitta Järvelin; Anja M Taanila; Jaro I Karppinen Journal: Eur Spine J Date: 2009-11-20 Impact factor: 3.134
Authors: Claudia M Campbell; Sara C Bounds; Hiroto Kuwabara; Robert R Edwards; James N Campbell; Jennifer A Haythornthwaite; Michael T Smith Journal: Pain Med Date: 2013-09-18 Impact factor: 3.750
Authors: Anne E Sanders; Gary D Slade; Eric Bair; Roger B Fillingim; Charles Knott; Ronald Dubner; Joel D Greenspan; William Maixner; Richard Ohrbach Journal: J Pain Date: 2013-12 Impact factor: 5.820