[Time factors and trends in the onset of the menarche, sex maturation and experience of orgasm in a questionnaire administered to 971 women in Vojvodina].

A questionnaire and interview of 971 women aged 15-80 years or more from three Voivodina communes (Becej, Veternik, Mali Idos) have supplied the following information: the arithmetic mean of the age of women during menarche is 13.459 +/- 1.523 years, the median being 13.872 years. Menarche appears earlier in the town (13.334 +/- 1.373) than in villages (13.668 +/- 1.61). The arithmetic mean of menarche recedes towards younger age groups (y = 12.90 +/- 0.106; r = 0.890, p less than 0.01), so that below 20 years is 1.4 years, and this is more pronounced in the town than on villages. The arithmetic mean of the age of women at sexarche (the first sexual intercourse) is 19.088 +/- 2.495 years, and the median is 18.964. The interval between the arithmetic mean of menarche and sexarche is 5.6 years, smaller in the urban (5.0) than in the rural environment (6.4). Sexarche recedes towards younger age groups (y = 18.136 +/- 0.130; r = 0.540), more intensively than the acceleration of menarche. In the course of their sexual life, 16.4% of women rarely experienced orgasm, 11.2% never did. The experience of orgasm "rarely" or "never" is statistically significantly more frequent in women over 40 years of life in relation to younger women (X2 = 6.893, p less than 0.01).