Belmaker E
Ann Hum Biol. 1982 Jul-Aug;9(4):321-8. doi: 10.1080/03014468200005821.
A status quo study was undertaken in Jerusalem, Israel in 1977 in order to determine the mean age of attainment of breast stages 2 and 3 (B2 and B3), pubic hair stages 2 and 3 (PH2 and PH3), and menarche. A sample of 285 Jewish girls in grades 3 through 8 were examined for signs of pubertal development and questioned about their menarcheal status. The data were analysed by probit analysis. The mean age found for B2 was 10.30 +/- 0.28 years; for B3 was 11.01 +/- 0.16 years; for PH2 was 10.58 +/- 0.22 years; for PH3 was 11.39 +/- 0.11 years; and for menarche was 13.29 +/- 0.45 years. These are the first data available on an Israeli population of mean age of breast and pubic hair development. A trend was found for later mean age of attainment of B2, B3, PH2 and PH3 among girls of the lowest social class (as measured by father's occupation), girls whose mothers were poorly educated, and girls from large families. A trend towards early mean age of attainment of B2 and B3 was found among girls of European-American-Israeli ethnic origin and towards early mean age of attainment of PH2 and PH3 among girls of Near Eastern origin.
1977年在以色列耶路撒冷进行了一项现状研究，以确定达到乳房发育2期和3期（B2和B3）、阴毛发育2期和3期（PH2和PH3）以及月经初潮的平均年龄。对285名三至八年级的犹太女孩进行了青春期发育迹象检查，并询问了她们的月经初潮状况。数据通过概率分析进行了分析。发现B2的平均年龄为10.30±0.28岁；B3为11.01±0.16岁；PH2为10.58±0.22岁；PH3为11.39±0.11岁；月经初潮为13.29±0.45岁。这些是关于以色列人群乳房和阴毛发育平均年龄的首批可用数据。在社会阶层最低（以父亲职业衡量）的女孩、母亲受教育程度低的女孩以及大家庭的女孩中，发现达到B2、B3、PH2和PH3的平均年龄有推迟的趋势。在欧美裔以色列女孩中发现达到B2和B3的平均年龄有提前的趋势，在近东裔女孩中发现达到PH2和PH3的平均年龄有提前的趋势。
