Graduate Institute of Public Health, College of Public Health, China Medical University; No. 100, Sec. 1, Jing-Mao Road, Beitun Dist., Taichung 406040, Taiwan; Department of Chinese Medicine, China Medical University Hospital; No. 2, Yude Road, North Dist., Taichung 404327, Taiwan.
School of Chinese Medicine, China Medical University; No. 91, Hsueh-Shih Road, Taichung 404333, Taiwan; Department of Chinese Medicine, China Medical University Hospital; No. 2, Yude Road, North Dist., Taichung 404327, Taiwan.
Pediatr Neonatol. 2024 Jan;65(1):64-70. doi: 10.1016/j.pedneo.2023.07.001. Epub 2023 Aug 2.
Recent studies have demonstrated a global decline in the age at menarche. Our study aimed to determine the age at menarche of Taiwanese women born between 1943 and 1989.
Data were obtained from the Taiwan Biobank. To view the trends in age at menarche, we analyzed data from 74,799 women. The mean, standard deviation, and annual percentage change in age at menarche were calculated for birth-year cohorts.
The mean age at menarche of Taiwanese women born in 1943 was 14.85 years. The age at menarche decreased to 12.20 years for those born in 1989. The mean age at menarche declined by 2.65 years across the 47-year study period; hence, the reduction rate was 0.56 years per decade. This study demonstrated a downward secular trend in the age at menarche of Taiwanese women born between 1943 and 1989. This trend occurred in three stages of decline: fast (1943-1953), slow (1953-1965), and moderate (1965-1989).
The age at menarche decreased by 2.65 years among Taiwanese women born in 1943 compared with those born in 1989. This decline occurred in three stages: fast (1943-1953), slow (1953-1965), and moderate (1965-1989). This significant downward secular trend in age at menarche reflects Taiwan's socioeconomic development.
最近的研究表明，全球女性初潮年龄呈下降趋势。本研究旨在确定 1943 年至 1989 年出生的台湾女性的初潮年龄。
数据来自台湾生物银行。为了观察初潮年龄的趋势，我们分析了 74799 名女性的数据。计算了各出生年份队列的初潮年龄的均值、标准差和年变化百分比。
1943 年出生的台湾女性的平均初潮年龄为 14.85 岁。1989 年出生的女性初潮年龄降至 12.20 岁。在 47 年的研究期间，平均初潮年龄下降了 2.65 岁；因此，每十年减少 0.56 岁。本研究表明，1943 年至 1989 年出生的台湾女性的初潮年龄呈下降趋势。这一趋势经历了三个下降阶段：快速（1943-1953 年）、缓慢（1953-1965 年）和适度（1965-1989 年）。
与 1989 年出生的女性相比，1943 年出生的台湾女性的初潮年龄下降了 2.65 岁。这一下降趋势分为三个阶段：快速（1943-1953 年）、缓慢（1953-1965 年）和适度（1965-1989 年）。初潮年龄的这种显著下降趋势反映了台湾的社会经济发展。
