Table 1.

Descriptive statistics of study participants in the three SHoT waves

	2010		2014		2018
	n	%	n	%	n	%	Difference
	6053		13 663		49 321
Gender							χ2 = 52.6, df = 2, p < 0.001
Women	3982	65.79	9082	66.47	33 927	69.08
Men	2071	34.21	4581	33.53	15 184	30.92
Age-groups							χ2 = 620.8, df = 6, p < 0.001
18–20	1237	20.44	1767	12.93	8832	18.17
21–22	1711	28.27	3678	26.92	15 471	31.83
23–25	1921	31.74	4887	35.77	15 902	32.71
26–34	1184	19.56	3331	24.38	8404	17.29