Four-yearly Wage Structure Survey 
Sampling errors
Studies undertaken. National total
Unidades: %
,Both sexes,,Females,,Males,,
,2022,2018,2022,2018,2022,2018,
        All studies,"",0,42,"",0,6,"",0,67,
        I. Less than Primary,"",5,79,"",7,9,"",6,78,
        II. Primary education,"",1,38,"",2,26,"",1,59,
        III. First stage of secondary education,"",1,14,"",1,49,"",1,5,
        IV. Second stage of secondary education,"",1,13,"",1,3,"",1,58,
        V. Higher-level vocational training courses and similar,"",1,36,"",2,05,"",1,71,
        VI. University graduates and the like,"",1,39,"",1,5,"",2,28,
        VII. Graduates and similar, and university doctors,"",1,33,"",1,51,"",1,91,
Notas:
Fuente: