10% of sexually active 17-18 year-olds had sex without a condom

One in three 17-18 year-olds have had sexual intercourse and one in 10 of those teenagers said they had never used a condom.

Almost a third of the 17-18 year-olds have used cannabis and 17% of them admitted to having self-harmed in the past, 11% in the last year.

The figures are contained in the ESRI’s review of the ‘Growing Up in Ireland’ national study of children.