In a previous cross-sectional study, we found lower bone mass during treatment with selective serotonin reuptake inhibitors (SSRIs) and risperidone in youths. Here, we evaluate the skeletal effects of these psychotropics at follow-up.
Between April 2005 and July 2011, medically healthy 7- to 17-year-old males treated with risperidone for 6 months or more were enrolled through child psychiatry outpatient clinics and returned for follow-up 1.5 years later. Treatment history was extracted from the medical and pharmacy records. Anthropometric, laboratory, and bone mass measurements were obtained. Multivariable linear regression analyses compared participants who remained on risperidone at follow-up to those who had discontinued risperidone treatment as well as SSRI-treated versus SSRI-unexposed participants.
The sample consisted of 94 boys with a mean age of 11.8 ± 2.7 years at study entry. The majority had an externalizing disorder and had received risperidone and SSRIs for 2.5 ± 1.7 years and 1.6 ± 1.9 years, respectively, at study entry. By follow-up, 26% (n = 24) had discontinued risperidone. Compared to discontinuing risperidone, continuing it was associated with a decline in participants' age-sex-height-race-specific areal bone mineral density (BMD) z score at the lumbar spine (P < .04) and failure to increase radius trabecular volumetric BMD (P < .03), after accounting for significant covariates. In addition, receiving an SSRI was associated with reduced lumbar spine areal BMD z score and radius trabecular volumetric BMD at both study entry (P < .02 and P < .03, respectively) and follow-up (P < .06 and P < .03, respectively), but without further decline between the 2 visits.
Chronic SSRI treatment in children and adolescents is associated with reduced, albeit stable, bone mass for age, while chronic risperidone treatment is associated with failure to accrue bone mass.
This research output has an Altmetric Attention Score of 15. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 31 August 2015.
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