DEFINE PERSONA.AESTUDIO
    AS SWITCH
    INCASE PERSONA.NIVELEDU = 0
    ASSIGN 99
    INCASE PERSONA.NIVELEDU = 1
    ASSIGN 0
    INCASE PERSONA.NIVELEDU = 2
    ASSIGN PERSONA.ULTANOAP
    INCASE PERSONA.NIVELEDU = 3
    ASSIGN PERSONA.ULTANOAP
    INCASE PERSONA.NIVELEDU = 4
    ASSIGN PERSONA.ULTANOAP
    INCASE PERSONA.NIVELEDU = 5
    ASSIGN PERSONA.ULTANOAP + 9
    INCASE PERSONA.NIVELEDU = 6
    ASSIGN PERSONA.ULTANOAP + 9
    INCASE PERSONA.NIVELEDU = 8 AND PERSONA.ULTANOAP >= 1
    ASSIGN PERSONA.ULTANOAP + 11
    INCASE PERSONA.NIVELEDU = 8 AND PERSONA.ULTSEMAP >= 1
    ASSIGN (PERSONA.ULTSEMAP / 2) + 11
    INCASE PERSONA.NIVELEDU = 9 AND PERSONA.ULTANOAP >= 1
    ASSIGN PERSONA.ULTANOAP + 11
    INCASE PERSONA.NIVELEDU = 9 AND PERSONA.ULTSEMAP >= 1
    ASSIGN (PERSONA.ULTSEMAP / 2) + 11
    TYPE INTEGER
    VARLABEL "Anos de Estudio"
    VALUELABELS
    0 "Ninguno"
    99   "No declarado"
    RANGE 0 - 99

TABLE AJ
AS AVERAGE OF PERSONA.AESTUDIO
BY MUNICIPI.HABCIUD
BY PERSONA.ANTCIUD
FOR  PERSONA.PARENTES = 1 AND PERSONA.AESTUDIO<99 AND  PERSONA.EDADN > 4