In the subgroup of adolescents who were at risk of mental health problems at baseline ( and referred for a consultation with the nurse ) , the E-health4Uth and consultation group showed minor to moderate positive results in mental health status ( SDQ : B = -1.79 , 95 % CI -3.35 to -0.22 ; YSR : B = -9.11 , 95 % CI -17.52 to -0.71 ) and health-related quality of life ( B = 7.81 , 95 % CI 2.41-13 .21 ) at follow-up compared to adolescents in the control group who were at risk of mental health problems at baseline .