class statsmodels.stats.contingency_tables.StratifiedTable(tables, shift_zeros=False)
[source]
Analyses for a collection of 2x2 contingency tables.
Such a collection may arise by stratifying a single 2x2 table with respect to another factor. This class implements the ‘Cochran-Mantel-Haenszel’ and ‘Breslow-Day’ procedures for analyzing collections of 2x2 contingency tables.
Parameters: | tables (list or ndarray) – Either a list containing several 2x2 contingency tables, or a 2x2xk ndarray in which each slice along the third axis is a 2x2 contingency table. |
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logodds_pooled
[source]
float – An estimate of the pooled log odds ratio. This is the Mantel-Haenszel estimate of an odds ratio that is common to all the tables.
log_oddsratio_se
float – The estimated standard error of the pooled log odds ratio, following Robins, Breslow and Greenland (Biometrics 42:311-323).
oddsratio_pooled
[source]
float – An estimate of the pooled odds ratio. This is the Mantel-Haenszel estimate of an odds ratio that is common to all tables.
risk_pooled
[source]
float – An estimate of the pooled risk ratio. This is an estimate of a risk ratio that is common to all the tables.
This results are based on a sampling model in which the units are independent both within and between strata.
from_data (var1, var2, strata, data) | Construct a StratifiedTable object from data. |
logodds_pooled () | |
logodds_pooled_confint ([alpha, method]) | A confidence interval for the pooled log odds ratio. |
logodds_pooled_se () | |
oddsratio_pooled () | |
oddsratio_pooled_confint ([alpha, method]) | A confidence interval for the pooled odds ratio. |
risk_pooled () | |
summary ([alpha, float_format, method]) | A summary of all the main results. |
test_equal_odds ([adjust]) | Test that all odds ratios are identical. |
test_null_odds ([correction]) | Test that all tables have odds ratio equal to 1. |
© 2009–2012 Statsmodels Developers
© 2006–2008 Scipy Developers
© 2006 Jonathan E. Taylor
Licensed under the 3-clause BSD License.
http://www.statsmodels.org/stable/generated/statsmodels.stats.contingency_tables.StratifiedTable.html