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st: A question about pgmhaz


From   Giovanni Parrinello <parrinel@med.unibs.it>
To   statalist <statalist@hsphsun2.harvard.edu>
Subject   st: A question about pgmhaz
Date   Thu, 03 May 2007 17:01:51 +0200

Dear All,
I am trying  to evaluate a 'discrete survival model' using the function
'pgmhaz':
pgmhaz8  età if dead~=., id( id) s( Interval) d( dead)

but I get an unexpected  error message


Per-interval censoring indicator variable must
equal one or zero: see -pgmhaz- help file
r(198);

. list id  Interval dead  età if id<4

    +----------------------------+
    | id   Interval   dead   età |
    |----------------------------|
 1. |  1          1      0    86 |
 2. |  1          2      0    86 |
 3. |  1          3      0    86 |
 4. |  1          4      0    86 |
 5. |  1          5      0    86 |
    |----------------------------|
 6. |  1          6      0    86 |
 7. |  1          7      0    86 |
 8. |  2          1      0    67 |
 9. |  2          2      0    67 |
10. |  2          3      0    67 |
    |----------------------------|
11. |  2          4      0    67 |
12. |  2          5      0    67 |
13. |  2          6      0    67 |
14. |  2          7      1    67 |
15. |  3          1      0    68 |
    |----------------------------|
16. |  3          2      0    68 |
17. |  3          3      0    68 |
18. |  3          4      0    68 |
19. |  3          5      0    68 |
    +----------------------------+

      dead |      Freq.     Percent        Cum.
------------+-----------------------------------
         0 |        406       88.45       88.45
         1 |         53       11.55      100.00
------------+-----------------------------------
     Total |        459      100.00


TIA
Giovanni Parrinello

--
dr. Giovanni Parrinello
External Lecturer
Medical Statistics Unit
Department of Biomedical Sciences
Viale Europa, 11 - 25123 Brescia Italy
Tel: +390303717528
Fax: +390303717488
email: parrinel@med.unibs.it

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