Table 1.

Participants

Group	Participants' characteristics	Number of participants
1	Men (married [5] and unmarried [4]), mean age 27 years old	9
2	Men (all unmarried men), mean age 28 years old	11
3	Women (married [2] and unmarried [5]), mean age 27 years old	7
4	Men (all married), mean age 36 years	8
Total		35