Season of birth bias and anorexia nervosa: Results from an international collaboration
Abstract Objective: Based on inconsistent findings in the literature, this study tested the hypothesis that “there is a season of birth bias for females with anorexia nervosa (AN).” Method: Females with AN, born in 1975 to 1996, were compared to females born in the same years and geographical region...
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Online Access: | http://dx.doi.org/10.1002/eat.22060 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Feat.22060 https://onlinelibrary.wiley.com/doi/pdf/10.1002/eat.22060 |
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crwiley:10.1002/eat.22060 2024-06-02T08:09:18+00:00 Season of birth bias and anorexia nervosa: Results from an international collaboration Winje, Eirin Torgalsbøen, Anne‐Kari Brunborg, Cathrine Lask, Bryan 2012 http://dx.doi.org/10.1002/eat.22060 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Feat.22060 https://onlinelibrary.wiley.com/doi/pdf/10.1002/eat.22060 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Eating Disorders volume 46, issue 4, page 340-345 ISSN 0276-3478 1098-108X journal-article 2012 crwiley https://doi.org/10.1002/eat.22060 2024-05-03T11:37:44Z Abstract Objective: Based on inconsistent findings in the literature, this study tested the hypothesis that “there is a season of birth bias for females with anorexia nervosa (AN).” Method: Females with AN, born in 1975 to 1996, were compared to females born in the same years and geographical regions by chi‐square test for contingency tables with known population parameter testing for monthly deviations. Five groups were based on a priori power calculation and geographical location: Iceland, Norway and Sweden ( N = 847), United Kingdom ( N = 706), Oregon, USA ( N = 394), Argentina and Brazil ( N = 486), and Australia ( N = 381). Results: The hypothesis was not supported in any of the groups. The associations (Cramér's V) between month of birth and the differences in distributions of births ranged from 0.05 to 0.08, none of which were statistically significant. Discussion: The main implication of these findings is that season of birth may not play a significant part in the aetiology of AN. © 2012 by Wiley Periodicals, Inc. (Int J Eat Disord 2013;) Article in Journal/Newspaper Iceland Wiley Online Library Norway Argentina International Journal of Eating Disorders 46 4 340 345 |
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Wiley Online Library |
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English |
description |
Abstract Objective: Based on inconsistent findings in the literature, this study tested the hypothesis that “there is a season of birth bias for females with anorexia nervosa (AN).” Method: Females with AN, born in 1975 to 1996, were compared to females born in the same years and geographical regions by chi‐square test for contingency tables with known population parameter testing for monthly deviations. Five groups were based on a priori power calculation and geographical location: Iceland, Norway and Sweden ( N = 847), United Kingdom ( N = 706), Oregon, USA ( N = 394), Argentina and Brazil ( N = 486), and Australia ( N = 381). Results: The hypothesis was not supported in any of the groups. The associations (Cramér's V) between month of birth and the differences in distributions of births ranged from 0.05 to 0.08, none of which were statistically significant. Discussion: The main implication of these findings is that season of birth may not play a significant part in the aetiology of AN. © 2012 by Wiley Periodicals, Inc. (Int J Eat Disord 2013;) |
format |
Article in Journal/Newspaper |
author |
Winje, Eirin Torgalsbøen, Anne‐Kari Brunborg, Cathrine Lask, Bryan |
spellingShingle |
Winje, Eirin Torgalsbøen, Anne‐Kari Brunborg, Cathrine Lask, Bryan Season of birth bias and anorexia nervosa: Results from an international collaboration |
author_facet |
Winje, Eirin Torgalsbøen, Anne‐Kari Brunborg, Cathrine Lask, Bryan |
author_sort |
Winje, Eirin |
title |
Season of birth bias and anorexia nervosa: Results from an international collaboration |
title_short |
Season of birth bias and anorexia nervosa: Results from an international collaboration |
title_full |
Season of birth bias and anorexia nervosa: Results from an international collaboration |
title_fullStr |
Season of birth bias and anorexia nervosa: Results from an international collaboration |
title_full_unstemmed |
Season of birth bias and anorexia nervosa: Results from an international collaboration |
title_sort |
season of birth bias and anorexia nervosa: results from an international collaboration |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1002/eat.22060 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Feat.22060 https://onlinelibrary.wiley.com/doi/pdf/10.1002/eat.22060 |
geographic |
Norway Argentina |
geographic_facet |
Norway Argentina |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
International Journal of Eating Disorders volume 46, issue 4, page 340-345 ISSN 0276-3478 1098-108X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/eat.22060 |
container_title |
International Journal of Eating Disorders |
container_volume |
46 |
container_issue |
4 |
container_start_page |
340 |
op_container_end_page |
345 |
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1800754992952377344 |