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Family and neighborhood socioeconomic inequality in cryptorchidism and hypospadias : A nationwide study from Sweden

Li, Xinjun LU ; Sundquist, Jan LU ; Hamano, Tsuyoshi and Sundquist, Kristina LU (2019) In Birth Defects Research 111(2). p.78-87
Abstract

Objectives: To examine whether there is an association between neighborhood deprivation and incidence of cryptorchidism and hypospadias, after accounting for family-level and individual-level sociodemographic characteristics. Methods: All boys born in Sweden between January 1, 2001 and December 31, 2010 were followed. Data were analyzed by multilevel logistic regression, with family-level and individual-level characteristics at the first level and level of neighborhood deprivation at the second level. Results: During the study period, among a total of 497,584 boys, 8,584 (1.7%) and 3,704 (0.7%) were diagnosed with cryptorchidism and hypospadias, respectively. Cumulative rates for cryptorchidism and hypospadias increased with increasing... (More)

Objectives: To examine whether there is an association between neighborhood deprivation and incidence of cryptorchidism and hypospadias, after accounting for family-level and individual-level sociodemographic characteristics. Methods: All boys born in Sweden between January 1, 2001 and December 31, 2010 were followed. Data were analyzed by multilevel logistic regression, with family-level and individual-level characteristics at the first level and level of neighborhood deprivation at the second level. Results: During the study period, among a total of 497,584 boys, 8,584 (1.7%) and 3,704 (0.7%) were diagnosed with cryptorchidism and hypospadias, respectively. Cumulative rates for cryptorchidism and hypospadias increased with increasing levels of neighborhood deprivation. In the study population, 1.5 per 100 and 2.0 per 100 boys, in the least and most deprived neighborhoods were diagnosed with cryptorchidism and 0.7 per 100 and 0.9 per 100 boys were diagnosed with hypospadias. Incidence of hospitalization for cryptorchidism and hypospadias increased with increasing neighborhood-level deprivation across all family-level and individual-level sociodemographic categories. The odds ratio (OR) for cryptorchidism and hypospadias for those living in high-deprivation neighborhoods versus those living in low-deprivation neighborhoods was 1.13 (95% confidence interval [CI] = 1.05–1.21) and 1.24 (95% CI = 1.12–1.37). High neighborhood deprivation remained significantly associated with higher odds of hypospadias after adjustment for family-level and individual-level sociodemographic characteristics (OR = 1.20, 95% CI = 1.08–1.35). Conclusions: This study is the largest so far on neighborhood influences on cryptorchidism and hypospadias. Our results suggest that neighborhood deprivation is associated with a moderate incidence of hypospadias independent of family-level and individual-level sociodemographic characteristics.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
cryptorchidism and hypospadias, incidence, multilevel modeling, neighborhood-level deprivation sociodemographic factors
in
Birth Defects Research
volume
111
issue
2
pages
78 - 87
publisher
John Wiley & Sons Inc.
external identifiers
  • scopus:85058685478
  • pmid:30561158
ISSN
2472-1727
DOI
10.1002/bdr2.1444
language
English
LU publication?
yes
id
cbcaffd4-0b2b-40d3-859c-232c86518b58
date added to LUP
2019-01-09 14:33:33
date last changed
2024-03-02 16:49:44
@article{cbcaffd4-0b2b-40d3-859c-232c86518b58,
  abstract     = {{<p>Objectives: To examine whether there is an association between neighborhood deprivation and incidence of cryptorchidism and hypospadias, after accounting for family-level and individual-level sociodemographic characteristics. Methods: All boys born in Sweden between January 1, 2001 and December 31, 2010 were followed. Data were analyzed by multilevel logistic regression, with family-level and individual-level characteristics at the first level and level of neighborhood deprivation at the second level. Results: During the study period, among a total of 497,584 boys, 8,584 (1.7%) and 3,704 (0.7%) were diagnosed with cryptorchidism and hypospadias, respectively. Cumulative rates for cryptorchidism and hypospadias increased with increasing levels of neighborhood deprivation. In the study population, 1.5 per 100 and 2.0 per 100 boys, in the least and most deprived neighborhoods were diagnosed with cryptorchidism and 0.7 per 100 and 0.9 per 100 boys were diagnosed with hypospadias. Incidence of hospitalization for cryptorchidism and hypospadias increased with increasing neighborhood-level deprivation across all family-level and individual-level sociodemographic categories. The odds ratio (OR) for cryptorchidism and hypospadias for those living in high-deprivation neighborhoods versus those living in low-deprivation neighborhoods was 1.13 (95% confidence interval [CI] = 1.05–1.21) and 1.24 (95% CI = 1.12–1.37). High neighborhood deprivation remained significantly associated with higher odds of hypospadias after adjustment for family-level and individual-level sociodemographic characteristics (OR = 1.20, 95% CI = 1.08–1.35). Conclusions: This study is the largest so far on neighborhood influences on cryptorchidism and hypospadias. Our results suggest that neighborhood deprivation is associated with a moderate incidence of hypospadias independent of family-level and individual-level sociodemographic characteristics.</p>}},
  author       = {{Li, Xinjun and Sundquist, Jan and Hamano, Tsuyoshi and Sundquist, Kristina}},
  issn         = {{2472-1727}},
  keywords     = {{cryptorchidism and hypospadias; incidence; multilevel modeling; neighborhood-level deprivation sociodemographic factors}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{78--87}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{Birth Defects Research}},
  title        = {{Family and neighborhood socioeconomic inequality in cryptorchidism and hypospadias : A nationwide study from Sweden}},
  url          = {{http://dx.doi.org/10.1002/bdr2.1444}},
  doi          = {{10.1002/bdr2.1444}},
  volume       = {{111}},
  year         = {{2019}},
}