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Journal of Population Sciences

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Table 4 Odds ratio and confidence interval (p=0.05) for certain sexual behaviours by gender and time (2000–2017). The sexual behaviour of surveyed students who had already had sexual intercourse

From: Catching up! The sexual behaviour and opinions of Italian students (2000–2017)

  % Value Min Max
Condom, pill or IUD at first sexual intercourse
 M 2000 74.6 1   
 M 2017 79.9 1.199 1.001 1.435
 F 2000 65.2 0.684* 0.561 0.832
 F 2017 78.5 1.101 0.911 1.331
Occasional partner at first sexual intercourse
 M 2000 35.5 1   
 M 2017 29.4 0.723 0.615 0.850
 F 2000 9.1 0.213* 0.169 0.269
 F 2017 11.8 0.260* 0.214 0.317
One sexual partner (until the survey)
 M 2000 38.7 1   
 M 2017 32.2 0.954 0.808 1.126
 F 2000 58.2 2.122* 1.769 2.545
 F 2017 42.3 1.294 1.091 1.536
Three sexual partners or more (until the survey)
 M 2000 30.7 1   
 M 2017 37.3 1.187 1.010 1.395
 F 2000 12.9 0.406* 0.334 0.495
 F 2017 23.8 0.750* 0.630 0.892
Casual sex (at least once)
 M 2000 47.4 1   
 M 2017 52.7 0.998 0.858 1.163
 F 2000 14.9 0.171* 0.139 0.211
 F 2017 27.6 0.371* 0.313 0.440
Betrayed the partner (at least once)
 M 2000 27.2 1   
 M 2017 22.7 0.784 0.658 0.935
 F 2000 12.1 0.412* 0.327 0.519
 F 2017 12.7 0.389* 0.316 0.479
Sex once a month or less (in previous 3 months)
 M 2000 43.8 1   
 M 2017 44.8 1.036 0.892 1.203
 F 2000 29.4 0.496* 0.416 0.592
 F 2017 30.9 0.593* 0.504 0.697
Sex 2–3 times a week or more (in previous 3 months)
 M 2000 27.6 1   
 M 2017 25.9 0.892 0.756 1.052
 F 2000 30.7 1.230* 1.020 1.482
 F 2017 34.0 1.267* 1.066 1.507
Sexual experience at risk of HIV (at least once)
 M 2000 32.1 1   
 M 2017 37.8 1.186 1.036 1.357
 F 2000 24.2 0.738* 0.634 0.860
 F 2017 34.3 1.000 0.867 1.154
Had a sexually transmitted disease (at least once)
 M 2000 4.2 1   
 M 2017 7.0 1.206 0.911 1.597
 F 2000 6.3 1.663* 1.231 2.246
 F 2017 11.6 2.295* 1.734 3.038
Casual sex without using a condom (at least once)
 M 2000 26.0 1   
 M 2017 39.1 1.600 1.356 1.889
 F 2000 18.8 0.686* 0.559 0.843
 F 2017 32.5 1.257 1.051 1.504
  1. Note: Percentages (in italics) and odds ratios for gender × time variable (Men2000 = 1): eleven logistic models fitted on the merged 2000 and 2017 datasets. The list of the control covariates and their distributions is reported in the Appendix.
  2. Bold indicates the odds ratios for 2017 are significantly different to the odds ratios for 2000 for both men and women
  3. For both years the asterisk means that the odd ratio for women is significantly different from that for men