Quality of life People aged 16 and over according to frequency of feeling alone by level of training attained Units: Porcentajes horizontales. ,Siempre,Casi siempre,Algunas veces,Solo alguna vez,Nunca, Total,1.8,3.6,20.2,15.9,58.5, Educación primaria o inferior,3.7,5.5,24.2,11.9,54.6, Educación secundaria primera etapa,2.0,3.5,20.2,13.4,60.9, Educación secundaria segunda etapa,1.6,3.5,19.3,17.1,58.5, Educación superior,0.8,2.7,18.7,18.9,58.9, No consta,..,7.3,14.4,18.4,59.9, Notes: Source: Instituto Nacional de Estadística