Within-Family Environmental Transmission of Drug Abuse
(2013) In JAMA Psychiatry 70(2). p.235-242- Abstract
- Context: Drug abuse (DA) strongly runs in families. Does this result solely from genetic factors or does the family environment contribute? Objective: To determine the familial environmental contribution to the risk for DA. Design: Follow-up in 9 public databases (1961-2009) in siblings and spouses. Setting: Sweden. Participants: A total of 137 199 sibling pairs and 7561 spousal pairs containing a proband with DA and matched control probands. Main Outcome Measures: Drug abuse recorded in medical, legal, or pharmacy registry records. Results: In the best-fit model, which contained significant linear, quadratic, and cubic effects, among full sibling pairs containing a proband with DA, the relative risk for DA in the sibling declined from... (More)
- Context: Drug abuse (DA) strongly runs in families. Does this result solely from genetic factors or does the family environment contribute? Objective: To determine the familial environmental contribution to the risk for DA. Design: Follow-up in 9 public databases (1961-2009) in siblings and spouses. Setting: Sweden. Participants: A total of 137 199 sibling pairs and 7561 spousal pairs containing a proband with DA and matched control probands. Main Outcome Measures: Drug abuse recorded in medical, legal, or pharmacy registry records. Results: In the best-fit model, which contained significant linear, quadratic, and cubic effects, among full sibling pairs containing a proband with DA, the relative risk for DA in the sibling declined from more than 6.0 for siblings born within 2 years of each other to less than 4.5 when born 10 years apart. Controlling for age differences in full sibling pairs, the hazard rate for DA in a sibling when the affected proband was older vs younger was 1.42 (95% CI, 1.31-1.54). In the best-fit model, which contained significant linear, quadratic, and cubic effects, among spousal pairs containing a proband with DA, the relative risk for DA in the spouse declined from more than 25.0 within 1 year of proband DA registration to 6.0 after 5 years. Conclusions: Controlling for genetic effects by examining only full siblings, sibling resemblance for the risk for DA was significantly greater in pairs closer vs more distant in age. Older siblings more strongly transmitted the risk for DA to their younger siblings than vice versa. After one spouse is registered for DA, the other spouse has a large short-lived increase in DA risk. These results support strong familial environmental influences on DA at various life stages. A complete understanding of the familial transmission of DA will require knowledge of how genetic and familial environmental risk factors act and interact over development. JAMA Psychiatry. 2013;70(2):235-242. Published online December 10, 2012. doi:10.1001/jamapsychiatry.2013.276 (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3749489
- author
- Kendler, Kenneth S. ; Ohlsson, Henrik LU ; Sundquist, Kristina LU and Sundquist, Jan LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- JAMA Psychiatry
- volume
- 70
- issue
- 2
- pages
- 235 - 242
- publisher
- American Medical Association
- external identifiers
-
- wos:000316729500013
- scopus:84874091757
- ISSN
- 2168-6238
- DOI
- 10.1001/jamapsychiatry.2013.276
- language
- English
- LU publication?
- yes
- id
- caaaa3cc-0bd6-459c-ae69-79c8513c18bf (old id 3749489)
- date added to LUP
- 2016-04-01 10:24:37
- date last changed
- 2022-04-12 06:00:20
@article{caaaa3cc-0bd6-459c-ae69-79c8513c18bf,
abstract = {{Context: Drug abuse (DA) strongly runs in families. Does this result solely from genetic factors or does the family environment contribute? Objective: To determine the familial environmental contribution to the risk for DA. Design: Follow-up in 9 public databases (1961-2009) in siblings and spouses. Setting: Sweden. Participants: A total of 137 199 sibling pairs and 7561 spousal pairs containing a proband with DA and matched control probands. Main Outcome Measures: Drug abuse recorded in medical, legal, or pharmacy registry records. Results: In the best-fit model, which contained significant linear, quadratic, and cubic effects, among full sibling pairs containing a proband with DA, the relative risk for DA in the sibling declined from more than 6.0 for siblings born within 2 years of each other to less than 4.5 when born 10 years apart. Controlling for age differences in full sibling pairs, the hazard rate for DA in a sibling when the affected proband was older vs younger was 1.42 (95% CI, 1.31-1.54). In the best-fit model, which contained significant linear, quadratic, and cubic effects, among spousal pairs containing a proband with DA, the relative risk for DA in the spouse declined from more than 25.0 within 1 year of proband DA registration to 6.0 after 5 years. Conclusions: Controlling for genetic effects by examining only full siblings, sibling resemblance for the risk for DA was significantly greater in pairs closer vs more distant in age. Older siblings more strongly transmitted the risk for DA to their younger siblings than vice versa. After one spouse is registered for DA, the other spouse has a large short-lived increase in DA risk. These results support strong familial environmental influences on DA at various life stages. A complete understanding of the familial transmission of DA will require knowledge of how genetic and familial environmental risk factors act and interact over development. JAMA Psychiatry. 2013;70(2):235-242. Published online December 10, 2012. doi:10.1001/jamapsychiatry.2013.276}},
author = {{Kendler, Kenneth S. and Ohlsson, Henrik and Sundquist, Kristina and Sundquist, Jan}},
issn = {{2168-6238}},
language = {{eng}},
number = {{2}},
pages = {{235--242}},
publisher = {{American Medical Association}},
series = {{JAMA Psychiatry}},
title = {{Within-Family Environmental Transmission of Drug Abuse}},
url = {{http://dx.doi.org/10.1001/jamapsychiatry.2013.276}},
doi = {{10.1001/jamapsychiatry.2013.276}},
volume = {{70}},
year = {{2013}},
}