Читать книгу The sexual life of woman in its physiological, pathological and hygienic aspects - E. Heinrich Kisch - Страница 9

The average age at which menstruation first appears, according to the older statistics, is in Swedish Lapland 18, in Norway, 16.12. In Copenhagen it is 16.75, in St. Petersburg 14.5.

More recent statistics for Finland are furnished by Engström. Among 3,500 women of pure Finnish descent, he found that menstruation began:

At the age of:
8 years in	2 instances.
9 years in	2 instances.
10 years in	4 instances.
11 years in	41 instances.
12 years in	178 instances.
13 years in	458 instances.
14 years in	715 instances.
15 years in	778 instances.
16 years in	614 instances.
17 years in	369 instances.
18 years in	195 instances.
19 years in	91 instances.
20 years in	31 instances.
21 years in	8 instances.
22 years in	10 instances.
23 years in	2 instances.
24 years in	1 instance.
25 years in	0 instance.
26 years in	1 instance.

Thus, in nearly half of all Finnish women, menstruation begins with the completion of the fourteenth and fifteenth years. The statistics include women of all classes of society.

At the Pirogoff Congress Grusdeff furnished particulars of the first onset of menstruation in Russia among 10,000 women. Menstruation began:

At the age of:
9 years in	1 instance.
10 years in	4 instances.
11 years in	31 instances.
12 years in	244 instances.
13 years in	864 instances.
14 years in	1641 instances.
15 years in	1795 instances.
16 years in	2012 instances.
17 years in	1692 instances.
18 years in	910 instances.
19 years in	498 instances.
20 years in	183 instances.
21 years in	65 instances.
22 years in	19 instances.
23 years in	5 instances.
24 years in	3 instances.
32 years in	1 instance.

In women of German race living in Russia puberty was earliest, occurring at the average age of 15.16 years; in Finnish women it was latest, occurring at the average age of 16.17 years.