src/ports/postgres/modules/stats/test/cox_prop_hazards.ic.sql_in

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 * to you under the Apache License, Version 2.0 (the
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/* -----------------------------------------------------------------------------
 * Cox proportional hazard survival regression
 *
 * Both Example taken from:
 * http://www.sph.emory.edu/~cdckms/CoxPH/prophaz2.html
 * -------------------------------------------------------------------------- */

DROP TABLE IF EXISTS leukemia;
CREATE TABLE leukemia (
    id INTEGER NOT NULL,
    grp DOUBLE PRECISION,
    wbc DOUBLE PRECISION,
    timedeath INTEGER,
    status BOOLEAN
);


INSERT INTO leukemia(id, grp, wbc, timedeath,status) VALUES
(0,0,1.45,35,TRUE),
(1,0,1.47,34,TRUE),
(3,0,2.2,32,TRUE),
(22,1,4.01,3,TRUE),
(23,1,4.91,2,TRUE),
(24,1,5,1,TRUE),
(25,NULL,4.01,3,TRUE);

drop table if exists coxph_out;
drop table if exists coxph_out_summary;
select coxph_train('leukemia', 'coxph_out', 'timedeath', 'ARRAY[grp, wbc]', 'status', NULL, NULL);