Compared to the control intervention , the E-health4Uth intervention , as a standalone intervention , showed minor positive results in health-related quality of life ( B = 2.79 , 95 % CI 0.72-4 .87 ) and condom use during intercourse among adolescents of Dutch ethnicity ( OR 3.59 , 95 % CI 1.71-7 .55 ) not replicated in the E-health4Uth and consultation group .