Secular Trends in Pubertal Growth Acceleration in Swedish Boys Born from 1947 to 1996

53Citations
Citations of this article
59Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

Importance: A secular trend for earlier menarcheal age has been established in girls but there are few studies of pubertal timing for boys. Objective: To determine if there is a secular trend for earlier pubertal timing among boys. Design, Setting, and Participants: For this population-based retrospective cohort study conducted in Gothenburg, Sweden, we collected heights and weights from school health records for boys born consecutively from January 1 and onwards in 1947 and every 5 years from 1951 to 1996 (n = 375 for each birth cohort from 1947-1991, n = 340 for the birth cohort in 1996, and n = 4090 for the total cohort). We estimated age at the peak height velocity (PHV), the maximum growth velocity during puberty, and childhood body mass index (BMI) at age 8 years for all study participants. The data were analyzed during 2018 and 2019. Boys were eligible if they had a complete personal identity number and data to calculate their age at PHV and childhood BMI. Approximately 2.4% of the original study population was excluded because they lacked a personal identity number, and in the remaining study population, 4090 (69%) had sufficient data to calculate childhood BMI and age at PHV. Exposures: The exposure was birth year and a potential confounding factor was childhood BMI. Main Outcomes and Measures: The outcome was age at PHV. Results: Of the 4090 participants, most were white and the mean (SD) age at PHV was 13.9 (1.1) years. A linear regression model revealed a significant association between year of birth and age at PHV. Age at PHV was 1.5 months earlier for every decade increase in birth year (95% CI, -1.72 to -1.19; P

References Powered by Scopus

The Timing of Normal Puberty and the Age Limits of Sexual Precocity: Variations around the World, Secular Trends, and Changes after Migration

1309Citations
N/AReaders
Get full text

Environmental toxins: Exposure to bisphenol A advances puberty

746Citations
N/AReaders
Get full text

Examination of US puberty-timing data from 1940 to 1994 for secular trends: Panel findings

541Citations
N/AReaders
Get full text

Cited by Powered by Scopus

Trends in the Incidence of Central Precocious Puberty and Normal Variant Puberty Among Children in Denmark, 1998 to 2017

91Citations
N/AReaders
Get full text

Endocrine-disrupting chemicals and their effects on puberty

45Citations
N/AReaders
Get full text

Neither soyfoods nor isoflavones warrant classification as endocrine disruptors: a technical review of the observational and clinical data

41Citations
N/AReaders
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Ohlsson, C., Bygdell, M., Celind, J., Sondén, A., Tidblad, A., Sävendahl, L., & Kindblom, J. M. (2019, September 1). Secular Trends in Pubertal Growth Acceleration in Swedish Boys Born from 1947 to 1996. JAMA Pediatrics. American Medical Association. https://doi.org/10.1001/jamapediatrics.2019.2315

Readers' Seniority

Tooltip

PhD / Post grad / Masters / Doc 17

59%

Researcher 5

17%

Professor / Associate Prof. 4

14%

Lecturer / Post doc 3

10%

Readers' Discipline

Tooltip

Medicine and Dentistry 10

33%

Agricultural and Biological Sciences 8

27%

Nursing and Health Professions 7

23%

Psychology 5

17%

Article Metrics

Tooltip
Mentions
Blog Mentions: 1
News Mentions: 30
Social Media
Shares, Likes & Comments: 35

Save time finding and organizing research with Mendeley

Sign up for free