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UNIVERSIDADE NOVE DE JULHO

Pós Graduação em Estatística Aplicada



          APRESENTAÇÃO
           MONOGRAFIA




             São Paulo
               2010
CÁLCULO DA PROVISÃO DE
INSUFICIÊNCIA DE CONTRIBUIÇÕES (PIC)
 UTILIZANDO MODELOS DE ANÁLISE DE
           SOBREVIVÊNCIA


        RICARDO ESTEVAM CIPRIANO DOS SANTOS
                       2010
O que é PIC?
          Comparativo Saldo PMBC AT1949 x AT2000
400.000

350.000

300.000

250.000

200.000

150.000

100.000

 50.000

     0
           5
           6
           6
           7
           6
           9
           6
           0
           7
           1
           7
           3
           7
           4
           7
           6
           7
           7
           9
           7
           0
           8
           1
           8
           3
           8
           4
           8
           6
           8
           7
           8
           8
           0
           9
           1
           9
           3
           9
           4
           9
           6
           9
           7
           9
           8
           9
          0
          1
          0
          1
          3
          0
          1
          4
          0
          1
          5
          0
          1
          7
          0
          1
          8
          0
          1
          0
          1
          1
          3
          1
          4
          1
                     Saldo AT1949   Saldo AT200
Como calcular PIC para participantes
    que não se aposentaram?




           Fase de          Fase de
         Acumulação         Benefício




  x      x+ m         x+n
Modelos de Análise de Sobrevivência
                         S(t) por sexo
       1.0
       0.8




                                                  ^                   dj 
                                                  S (t ) = ∏ 1 − 
                                                                      n 
       0.6




                                                           j :t j < t  j 
S(t)

       0.4




                 feminino
       0.2




                 masculino
       0.0




             0   50          100      150   200

                              Tempo
Tipos de Modelos de Análise de
                Sobrevivência
 Não paramétricos :
  -Kaplan-Meier;
  -Nelson-Aalen.

 Paramétricos:
  -Weibull;
  -Exponencial;
  -Log-Normal;
  -Log-Logistica;
  -Gamma.

 Semi-Paramétricos:
      -Modelo de Cox.
Diferença entre Análise de
Sobrevivência e Regressão
     Dados Censurados
                        Fim da pesquisa
Estudo da Base modelo não
paramétrico – Kaplan Meier




                   1 .0
                   0 .8
                   0 .6
           S (t)
                   0 .4
                   0 .2
                   0 .0
                          0   50         100         150            200       250   300

                                                           Tempos

                                   Gráfico 1: Curva de permanência Kaplan-Meier
                                                   Fonte: Própria
Comparativo Kaplan-Meier x
                                Modelos Paramétricos
        1 .0




                                                                            1 .0
        0 .8




                                                                            0 .8
                                           K a p la n - M e i e r                                              K a p la n - M e i e r
                                           E x p o n e n tia l                                                 W e i b u ll
        0 .6




                                                                            0 .6
                                           n                                                                   n
S (t)




                                                                    S (t)
                                           0 .8                                                                0 .8
        0 .4




                                                                            0 .4
        0 .2




                                                                            0 .2
        0 .0




                                                                            0 .0
               0   50   100    150   200   250          300                        0   50   100   150    200   250            300

                                Tem pos                                                            Tem pos
Comparativo Kaplan-Meier x
                                Modelos Paramétricos
        1 .0




                                                                              1 .0
        0 .8




                                                                              0 .8
                                             K a p la n - M e i e r                                                K a p la n - M e i e r
                                             L o g -n o rm a l                                                     L o g - lo g i s ti c
        0 .6




                                                                              0 .6
                                             n                                                                     n
S (t)




                                                                      S (t)
                                             0 .8                                                                  0 .8
        0 .4




                                                                              0 .4
        0 .2




                                                                              0 .2
        0 .0




               0   50   100    150   200   250        300                     0 .0   0   50   100   150    200   250         300

                                Tem pos                                                              Tem pos
Comparativo Kaplan-Meier x Modelos
                                             Paramétricos - QQPLOT
                          1 .0




                                                                                                                            1 .0
                          0 .8




                                                                                                                            0 .8
S (t): lo g -n o rm a l




                                                                                                 S (t): lo g -lo g is tic
                          0 .6




                                                                                                                            0 .6
                          0 .4




                                                                                                                            0 .4
                          0 .2




                                                                                                                            0 .2
                          0 .0




                                                                                                                            0 .0

                                 0 .0    0 .2       0 .4              0 .6         0 .8   1 .0                                     0 .0   0 .2       0 .4              0 .6         0 .8   1 .0

                                                S ( t ) : K a p la n - m e i e r                                                                 S ( t ) : K a p la n - m e i e r
Comparativo Kaplan-Meier x Modelos
      Paramétricos – Maxi-
         Verossimilhança
Modelo paramétrico final distribuição
                          Log Normal
        1 .0




                                                                                     1 .0
        0 .8




                                                                                     0 .8
                                                 K a p la n - M e i e r               − log(t ) + 2,950684 
                                                 L o g -n o rm a l        S (t ) = φ                       
        0 .6




                                                                                     0 .6
                                                 n                                         2,096358        
S (t)




                                                                             S (t)
                                                 0 .8
        0 .4




                                                                                     0 .4
        0 .2




                                                                                     0 .2
        0 .0




                                                                                     0 .0
               0   5 0   10 0   15 0   2 00   25 0        3 00                              0   50   10 0   15 0

                                 Tem po s                                                                    Tem p
Fórmula proposta para o
           cálculo da PIC

        PMBaCt                         
PICt = 
        12 a     *12 n−t a ' x − PMBaC .α
                                        
          n −t x                       

                     S ( t +n )
               α=
                      S(t )
Resultado do Cálculo
idade Idade   Saldo                      (1 2 )                     (1 2 )
                        12 n - t / a x            12 n - t / a' x              IC      S (t+n)   S (t)     α        PI C
início Apos. PMBaC
  35    65    180.000          32,31                      42,84               58.686   0,081     0,162   49,79%     29.221
  42    65    20.000           48,79                      63,33               5.958    0,101     0,169   60,17%     3.585
  45    65    40.000          101,45                     121,86               8.047    0,114     0,119   95,97%     7.722
  39    65    10.000           23,97                      32,03               3.366    0,091     0,342   26,77%      901
  38    65    80.000           28,81                      38,35               26.468   0,089     0,225   39,30%     10.401
  30    65    180.000          16,21                      21,79               62.043   0,070     0,257   27,32%     16.951
  36    65    360.000          73,50                      91,94               90.321   0,083     0,099   84,24%     76.082
   TOTAL     870.000                                                         254.889                               144.863
                                                                                                          Dif.    -110.027
                                                                                                          %       -43,17%
Considerações Finais




    resantos@mapfre.com.br

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Cálculo PIC Modelos Sobrevivência

  • 1. UNIVERSIDADE NOVE DE JULHO Pós Graduação em Estatística Aplicada APRESENTAÇÃO MONOGRAFIA São Paulo 2010
  • 2. CÁLCULO DA PROVISÃO DE INSUFICIÊNCIA DE CONTRIBUIÇÕES (PIC) UTILIZANDO MODELOS DE ANÁLISE DE SOBREVIVÊNCIA RICARDO ESTEVAM CIPRIANO DOS SANTOS 2010
  • 3. O que é PIC? Comparativo Saldo PMBC AT1949 x AT2000 400.000 350.000 300.000 250.000 200.000 150.000 100.000 50.000 0 5 6 6 7 6 9 6 0 7 1 7 3 7 4 7 6 7 7 9 7 0 8 1 8 3 8 4 8 6 8 7 8 8 0 9 1 9 3 9 4 9 6 9 7 9 8 9 0 1 0 1 3 0 1 4 0 1 5 0 1 7 0 1 8 0 1 0 1 1 3 1 4 1 Saldo AT1949 Saldo AT200
  • 4. Como calcular PIC para participantes que não se aposentaram? Fase de Fase de Acumulação Benefício x x+ m x+n
  • 5. Modelos de Análise de Sobrevivência S(t) por sexo 1.0 0.8 ^  dj  S (t ) = ∏ 1 −   n  0.6 j :t j < t j  S(t) 0.4 feminino 0.2 masculino 0.0 0 50 100 150 200 Tempo
  • 6. Tipos de Modelos de Análise de Sobrevivência  Não paramétricos : -Kaplan-Meier; -Nelson-Aalen.  Paramétricos: -Weibull; -Exponencial; -Log-Normal; -Log-Logistica; -Gamma.  Semi-Paramétricos: -Modelo de Cox.
  • 7. Diferença entre Análise de Sobrevivência e Regressão Dados Censurados Fim da pesquisa
  • 8. Estudo da Base modelo não paramétrico – Kaplan Meier 1 .0 0 .8 0 .6 S (t) 0 .4 0 .2 0 .0 0 50 100 150 200 250 300 Tempos Gráfico 1: Curva de permanência Kaplan-Meier Fonte: Própria
  • 9. Comparativo Kaplan-Meier x Modelos Paramétricos 1 .0 1 .0 0 .8 0 .8 K a p la n - M e i e r K a p la n - M e i e r E x p o n e n tia l W e i b u ll 0 .6 0 .6 n n S (t) S (t) 0 .8 0 .8 0 .4 0 .4 0 .2 0 .2 0 .0 0 .0 0 50 100 150 200 250 300 0 50 100 150 200 250 300 Tem pos Tem pos
  • 10. Comparativo Kaplan-Meier x Modelos Paramétricos 1 .0 1 .0 0 .8 0 .8 K a p la n - M e i e r K a p la n - M e i e r L o g -n o rm a l L o g - lo g i s ti c 0 .6 0 .6 n n S (t) S (t) 0 .8 0 .8 0 .4 0 .4 0 .2 0 .2 0 .0 0 50 100 150 200 250 300 0 .0 0 50 100 150 200 250 300 Tem pos Tem pos
  • 11. Comparativo Kaplan-Meier x Modelos Paramétricos - QQPLOT 1 .0 1 .0 0 .8 0 .8 S (t): lo g -n o rm a l S (t): lo g -lo g is tic 0 .6 0 .6 0 .4 0 .4 0 .2 0 .2 0 .0 0 .0 0 .0 0 .2 0 .4 0 .6 0 .8 1 .0 0 .0 0 .2 0 .4 0 .6 0 .8 1 .0 S ( t ) : K a p la n - m e i e r S ( t ) : K a p la n - m e i e r
  • 12. Comparativo Kaplan-Meier x Modelos Paramétricos – Maxi- Verossimilhança
  • 13. Modelo paramétrico final distribuição Log Normal 1 .0 1 .0 0 .8 0 .8 K a p la n - M e i e r  − log(t ) + 2,950684  L o g -n o rm a l S (t ) = φ   0 .6 0 .6 n  2,096358  S (t) S (t) 0 .8 0 .4 0 .4 0 .2 0 .2 0 .0 0 .0 0 5 0 10 0 15 0 2 00 25 0 3 00 0 50 10 0 15 0 Tem po s Tem p
  • 14. Fórmula proposta para o cálculo da PIC  PMBaCt  PICt =   12 a *12 n−t a ' x − PMBaC .α   n −t x  S ( t +n ) α= S(t )
  • 15. Resultado do Cálculo idade Idade Saldo (1 2 ) (1 2 ) 12 n - t / a x 12 n - t / a' x IC S (t+n) S (t) α PI C início Apos. PMBaC 35 65 180.000 32,31 42,84 58.686 0,081 0,162 49,79% 29.221 42 65 20.000 48,79 63,33 5.958 0,101 0,169 60,17% 3.585 45 65 40.000 101,45 121,86 8.047 0,114 0,119 95,97% 7.722 39 65 10.000 23,97 32,03 3.366 0,091 0,342 26,77% 901 38 65 80.000 28,81 38,35 26.468 0,089 0,225 39,30% 10.401 30 65 180.000 16,21 21,79 62.043 0,070 0,257 27,32% 16.951 36 65 360.000 73,50 91,94 90.321 0,083 0,099 84,24% 76.082 TOTAL 870.000 254.889 144.863 Dif. -110.027 % -43,17%
  • 16. Considerações Finais resantos@mapfre.com.br