Statistics::LogRank - Perl module to perform the log rank test (also know as the Mantel-Haenszel or Mantel-Cox test) on survival data.
use Statistics::LogRank; @group_1_survival = (99,98,95,90,90,87); @group_1_deaths = ( 1, 0, 3, 4, 0, 3); @group_2_survival = (100,97,93,90,88,82); @group_2_deaths = ( 0, 2, 4, 1, 2, 6); my $log_rank = new LogRank; $log_rank->load_data('group 1 survs',@group_1_survival); $log_rank->load_data('group 1 deaths',@group_1_deaths); $log_rank->load_data('group 2 survs',@group_2_survival); $log_rank->load_data('group 2 deaths',@group_2_deaths); my ($log_rank_stat,$p_value) = $log_rank->perform_log_rank_test('group 1 survs','group 1 deaths','group 2 survs','group 2 deaths'); print "log rank statistic for test is $log_rank_stat\n"; print "p value for test is $p_value\n";
This module performs the log rank statistical test on survival data. The log rank test is also known as the Mantel-Cox test and the Mantel-Haenszel test. It takes 2 groups of survival and death data (we separate the two to cope with censure, subjects that drop out of the study before completion) and compares if the two groups are identical.
Martin Lee, Star Technology Group (mlee@startechgroup.co.uk)
To install Statistics::LogRank, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Statistics::LogRank
CPAN shell
perl -MCPAN -e shell install Statistics::LogRank
For more information on module installation, please visit the detailed CPAN module installation guide.