Description Usage Arguments Value
hclate computes Kolmogorov-Smirnov and Cramer-von Mises type tests for the null hypothesis of homogeneous conditional local average treatment effects. The test is suitable for both censored and uncensored outcomes, and relies on the availability of a binary instrumental variable that satisfies additional assumptions. For details of the testing procedure, see Sant'Anna (2016b),'Nonparametric Tests for Treatment Effect Heterogeneity with Duration Outcomes'.
1 | hclate(out, delta, treat, inst, xvector, xpscore, b, cores = 1)
|
out |
vector containing the outcome of interest |
delta |
vector containing the censoring indicator (1 if observed, 0 if censored) |
treat |
vector containing the treatment indicator (1 if treated, 0 if control) |
inst |
vector containing the binary instrument |
xvector |
matrix (or data frame) containing the conditioning covariates |
xpscore |
matrix (or data frame) containing the covariates (and their transformations) to be included in the propensity score estimation |
b |
number of bootstrap draws |
cores |
number of cores to use during the bootstrap (default is 1). If cores>1, the bootstrap is conducted using parLapply, instead of lapply type call. |
a list containing the Kolmogorov-Smirnov test statistic (kstest), the Cramer-von Mises test statistic (cvmtest), and their associated bootstrapped p-values, pvks and pvcvm, respectively.
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