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

Genus

Journal of Population Sciences

Table 3 Odds ratio and confidence interval (p=0.05) for certain sexual behaviours by gender and time (2000–2017). Sexual behaviour of all surveyed students

	%	Value	Min	Max
First sexual intercourse before 18th birthday
M 2000	35.8	1
M 2017	50.1	1.544	1.353	1.762
F 2000	33.1	0.904	0.780	1.047
F 2017	49.9	1.792	1.560	2.058
First sexual intercourse before 16th birthday
M 2000	12.5	1
M 2017	18.6	1.429	1.190	1.716
F 2000	9.1	0.687^*	0.546	0.864
F 2017	18.9	1.872	1.547	2.265
First non complete experience before 16th birthday
M 2000	52.5	1
M 2017	53.2	0.819	0.719	0.932
F 2000	42.1	0.680^*	0.591	0.783
F 2017	46.3	0.741	0.647	0.849
First couple relationship before 16th birthday
M 2000	44.8	1
M 2017	47.5	1.132	0.988	1.296
F 2000	51.6	1.415^*	1.224	1.635
F 2017	52.6	1.605^*	1.394	1.850
Often watching porn on the web during the last year
M 2000	10.4	1
M 2017	39.5	5.298	4.516	6.215
F 2000	0.4	0.071^*	0.059	0.085
F 2017	2.8	0.159^*	0.137	0.185
Often speaking about sex with a friend at age 16-18
M 2000	67.1	1
M 2017	67.0	0.936	0.818	1.071
F 2000	48.3	0.529^*	0.459	0.610
F 2017	46.3	0.402^*	0.350	0.462
At least once homosexual experience
M 2000	6.4	1
M 2017	7.2	1.033	0.799	1.337
F 2000	4.3	0.727^*	0.537	0.985
F 2017	14.9	2.327^*	1.811	2.989

Note: Percentages (in italics) and odds ratios for gender × time variable (Men2000 = 1). Seven logistic models fitted on the merged 2000 and 2017 datasets.
The list of the control covariates and their distributions is reported in the Appendix
Bold indicates the odds ratios for 2017 are significantly different from the odds ratios for 2000 for both men and women
For both years the asterisk means that the odd ratio for women is significantly different from that for men