DEFINE PERSONA.AESTUDIO
	AS SWITCH
  //PARA QUIENES NO ASISTEN
	INCASE PERSONA.P23 = 1 OR PERSONA.P23 = 3 AND PERSONA.P21 = 2
	ASSIGN 0
	INCASE PERSONA.P23 = 2 OR PERSONA.P23 = 4 OR PERSONA.P23 = 6 AND PERSONA.P21 = 2
	ASSIGN PERSONA.P24
	INCASE PERSONA.P23 = 5 AND PERSONA.P21 = 2
	ASSIGN PERSONA.P24 + 6
	INCASE PERSONA.P23 = 7 AND PERSONA.P21 = 2
	ASSIGN PERSONA.P24 + 9
	INCASE PERSONA.P23 = 8 OR PERSONA.P23 = 9 AND PERSONA.P21 = 2
	ASSIGN PERSONA.P24 + 12
	INCASE PERSONA.P23 = 10 AND PERSONA.P21 = 2
	ASSIGN PERSONA.P24 + 18
 //PARA QUIENES ASISTEN
	INCASE PERSONA.P23 = 1 OR PERSONA.P23 = 3 AND PERSONA.P21 = 1
	ASSIGN 0
	INCASE PERSONA.P23 = 2 OR PERSONA.P23 = 4 OR PERSONA.P23 = 6 AND PERSONA.P21 = 1
	ASSIGN PERSONA.P24 - 1
	INCASE PERSONA.P23 = 5 AND PERSONA.P21 = 1
	ASSIGN PERSONA.P24 + 5
	INCASE PERSONA.P23 = 7 AND PERSONA.P21 = 1
	ASSIGN PERSONA.P24 + 8
	INCASE PERSONA.P23 = 8 OR PERSONA.P23 = 9 AND PERSONA.P21 = 1
	ASSIGN PERSONA.P24 + 11
	INCASE PERSONA.P23 = 10 AND PERSONA.P21 = 1
	ASSIGN PERSONA.P24 + 17
	ELSE 99
	TYPE INTEGER
	RANGE (0 : 99) 
	VARLABEL "ANOS DE ESTUDIO"
	DEFAULT 98

TABLE A3
AS AVERAGE OF PERSONA.AESTUDIO
BY PERSONA.CIUHORD58
BY PERSONA.CIUAORD58
FOR PERSONA.P03 > 34 AND PERSONA.P03 < 50 AND  PERSONA.AESTUDIO < 98