Health Homeless persons according to the severity of the depressive symptomatology by drug use at some time Units: percentage Total None Mild Moderate Moderately severe Severe Total 100.0 40.4 26.8 15.8 11.0 5.9 Have ever used drugs 100.0 28.1 25.5 22.4 15.0 9.0 Have never used drugs 100.0 49.6 27.8 10.8 8.0 3.7 Notes: Source: National Statistics Institute