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Hoftun, G. B., Romundstad, P. R., & Rygg, M. (2012). Factors associated with adolescent chronic non-specific pain, chronic multisite pain, and chronic pain with high disability: the Young-HUNT Study 2008. J Pain, 13(9), 874–883.
Abstract: The aim of this study was to assess the association of chronic pain with different lifestyle factors and psychological symptoms in a large, unselected adolescent population. Pain was evaluated as chronic non-specific pain, chronic multisite pain, and in additional analyses, chronic pain with high disability. The study was performed during 2006 to 2008 in Nord-Trondelag County, Norway. Adolescents aged 13 to 18 years were invited to participate. The response rate was 78%. The final study population consisted of 7,373. Sedentary behavior and pain were associated only in girls. In both sexes, overweight and obesity were associated with increased odds of pain. Whereas both smoking and alcohol intoxication showed strong associations with pain, the associations were attenuated after adjustments for psychosocial factors. Symptoms of anxiety and depression showed the strongest associations with pain (odds ratio 4.1 in girls and 3.7 in boys). The odds of pain increased gradually by number of unfavorable lifestyle factors reported. This study revealed consistent associations between lifestyle factors, anxiety and depression, and chronic pain, including multisite pain and pain with high disability. The consistency across the different pain categories suggests common underlying explanatory mechanisms, and despite the cross-sectional design, the study indicates several modifiable targets in the management of adolescent chronic pain. PERSPECTIVE: This study showed a clear and consistent relation between different lifestyle factors, anxiety and depression, and the pain categories chronic non-specific pain, multisite pain, and also pain with high disability. Independent of causality, it underlines the importance of a broad perspective when studying, preventing, and treating chronic pain in adolescents.
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Iversen, J. M., Hoftun, G. B., Romundstad, P. R., & Rygg, M. (2015). Adolescent chronic pain and association to perinatal factors: linkage of Birth Registry data with the Young-HUNT Study. European journal of pain, 19(4), 567–575.
Abstract: BACKGROUND: The aim of this study was to examine the associations of birthweight, gestation and 5-min Apgar score with self-reported chronic nonspecific pain in a large, unselected adolescent population. METHODS: The third population-based Nord-Trondelag Health Study (HUNT) included 8200 adolescents aged 13-19 years, constituting 78.2% of adolescents in Nord-Trondelag County. In the target age group, 13-18 years, data on pain frequency from 10 localizations were available from 7373 adolescents. Chronic nonspecific pain was defined as pain at least once a week during the last 3 months, not related to any known disease or injury. Chronic multisite pain was defined as chronic pain in at least three localizations, and chronic daily pain was defined as chronic pain almost every day. Perinatal data were retrieved from the Medical Birth Registry of Norway, and data were available for 7120 of the 7373 adolescents. Covariates included adolescent and maternal general health measures from the HUNT study. RESULTS: We found no consistent association between preterm birth and chronic pain and no clear association between birthweight and chronic pain complaints in adolescence. Post-term birth in boys and a low 5-min Apgar score in both sexes tended to increase the reporting of chronic pain in adolescence. CONCLUSIONS: Perinatal factors, and especially preterm birth and low birthweight, did not seem to have a major impact on pain complaints in adolescence.
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