Barrett F M
Arch Sex Behav. 1980 Oct;9(5):367-90. doi: 10.1007/BF02115939.
Changes in coital experience, birth control usage, and sex education between 1968, 1971, 1974, and 1978 were studied in unmarried Canadian university students. The percentage of coitally experienced females increased from 32% in 1968 to 58% in 1978 and of males from 40% to 62%. There was no significant change between 1974 and 1978 for either sex, nor were there sex differences in coital experience in either year. Coitally experienced females were more likely to have had intercourse in the 3 months preceding both 1974 and 1978 surveys, but otherwise there were no sex differences in coital frequency, lifetime number of coital partners, or age at first intercourse. Religion was a more reliable indicator of coital experience in 1968 than in 1978. Males were more likely than females to report postpubertal sexual contacts which they classified as homosexual (16.5% vs. 7%) whereas 12-13% of both sexes reported no sexual contacts of any kind with another person. Contraceptive risk-taking was high at first intercourse and among those having infrequent coitus. However, both this group and more coitally active students were less likely to take such risks in 1978 than in 1968, almost entirely because of increased pill use. Coitally experienced vs. inexperienced students differed in their ranking of the major influences on their knowledge and attitudes about sex.
对1968年、1971年、1974年和1978年间未婚加拿大大学生的性交经历、节育措施使用情况和性教育变化进行了研究。有性交经历的女性比例从1968年的32%增至1978年的58%，男性比例从40%增至62%。1974年至1978年期间，两性均无显著变化，且这两年间在性交经历方面也不存在性别差异。有性交经历的女性在1974年和1978年调查前的3个月内更有可能发生过性行为，但在性交频率、性伴侣终生数量或首次性交年龄方面不存在性别差异。1968年，宗教比1978年更能可靠地反映性交经历。男性比女性更有可能报告将青春期后与他人的性接触归类为同性恋（分别为16.5%和7%），而12%至13%的两性均报告未与他人有过任何形式的性接触。首次性交时以及性交不频繁者采取避孕措施的风险较高。然而，与1968年相比，1978年这一群体以及性交更为活跃的学生采取此类风险行为的可能性降低，几乎完全是因为避孕药具使用增加。有性交经历和无性交经历的学生在对其性知识和性态度的主要影响因素的排名上存在差异。
