Hosseini Mostafa, Yousefifard Mahmoud, Baikpour Masoud, Motlagh Mohammad Esmail, Heshmat Ramin, Qorbani Mostafa, Ataei Neamatollah, Yaseri Mehdi, Abbasi Arash, Kelishadi Roya
Pediatric Chronic Kidney Disease Research Center, The Children's Hospital Medical Center, Tehran University of Medical Sciences, Tehran, Iran.
Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Int J Endocrinol Metab. 2020 Jan 19;18(1):e82866. doi: 10.5812/ijem.82866. eCollection 2020 Jan.
The assessment of the trend of changes in the prevalence of abdominal obesity can provide useful health information.
This study aimed to conduct an age-period-cohort (APC) analysis to provide the trend of the prevalence of abdominal obesity in the Iranian pediatric population through the three temporal dimensions of age, period, and cohort.
Data were gathered from a total number of 53,962 Iranian children and adolescents aged 5 to 19 years through four surveys of a national surveillance program (the CASPIAN study) conducted in 2003, 2007, 2011, and 2015. Abdominal obesity was defined as a waist-to-height ratio of ≥ 0.5. The APC analysis was performed using the "apc_ie"command in STATA software.
A significant correlation existed between age, period, and cohort effects and the prevalence of abdominal obesity in children and adolescents. With increasing age, regardless of considerable fluctuations, the prevalence of abdominal obesity followed an overall increasing trend in both genders. The age effect coefficient increased from -2.1 in the age group of 5 - 9 years to 1.1 in the age group of 10 - 14 years and then decreased to 1.0 in the age group of 15 - 19 years among boys; figures followed an increasing trend in girls from -2.2 to 0.8 and 1.5, respectively. As for the period effect, in both boys and girls, the prevalence of abdominal obesity followed an increasing trend when coming from the earlier periods to the recent ones (from -4.6 to 4.0 in boys and from -4.1 to 2.4 in girls). Likewise, this prevalence increased from earlier birth cohorts to the recent ones in both genders.
The prevalence of abdominal obesity is increasing among Iranian children and adolescents and this rising trend is affected by age, period, and birth cohort effects. The findings of this study emphasize the necessity of implementing comprehensive interventions for tackling the epidemic of childhood obesity.
评估腹部肥胖患病率的变化趋势可提供有用的健康信息。
本研究旨在进行年龄-时期-队列（APC）分析，以通过年龄、时期和队列这三个时间维度呈现伊朗儿童人群腹部肥胖患病率的趋势。
通过2003年、2007年、2011年和2015年开展的一项全国监测项目（CASPIAN研究）的四次调查，收集了总共53962名5至19岁伊朗儿童和青少年的数据。腹部肥胖定义为腰高比≥0.5。使用STATA软件中的“apc_ie”命令进行APC分析。
年龄、时期和队列效应与儿童和青少年腹部肥胖患病率之间存在显著相关性。随着年龄增长，无论有显著波动，腹部肥胖患病率在两性中总体呈上升趋势。男孩中，年龄效应系数从5至9岁年龄组的-2.1增加到10至14岁年龄组的1.1，然后在15至19岁年龄组降至1.0；女孩中的数字分别从-2.2增加到0.8和1.5，呈上升趋势。至于时期效应，在男孩和女孩中，腹部肥胖患病率从早期到近期均呈上升趋势（男孩从-4.6到4.0，女孩从-4.1到2.4）。同样，这种患病率在两性中从较早出生队列到近期队列均有所增加。
伊朗儿童和青少年中腹部肥胖患病率在上升，且这种上升趋势受年龄、时期和出生队列效应影响。本研究结果强调了实施全面干预措施以应对儿童肥胖流行的必要性。
