reportROC - An Easy Way to Report ROC Analysis
Provides an easy way to report the results of ROC analysis, including: 1. an ROC curve. 2. the value of Cutoff, AUC (Area Under Curve), ACC (accuracy), SEN (sensitivity), SPE (specificity), PLR (positive likelihood ratio), NLR (negative likelihood ratio), PPV (positive predictive value), NPV (negative predictive value), PPA (percentage of positive accordance), NPA (percentage of negative accordance), TPA (percentage of total accordance), KAPPA (kappa value).
Last updated 3 years ago
2.77 score 2 dependents 33 scripts 612 downloadsstddiff - Calculate the Standardized Difference for Numeric, Binary and Category Variables
Contains three main functions including stddiff.numeric(), stddiff.binary() and stddiff.category(). These are used to calculate the standardized difference between two groups. It is especially used to evaluate the balance between two groups before and after propensity score matching.
Last updated 3 years ago
2.51 score 2 dependents 18 scripts 914 downloadsCATT - The Cochran-Armitage Trend Test
This function conducts the Cochran-Armitage trend test to a 2 by k contingency table. It will report the test statistic (Z) and p-value.A linear trend in the frequencies will be calculated, because the weights (0,1,2) will be used by default.
Last updated 8 years ago
2.48 score 1 dependents 2 scripts 223 downloadsFlexScan - Flexible Scan Statistics
An easy way to conduct flexible scan. Monte-Carlo method is used to test the spatial clusters given the cases, population, and shapefile. A table with formal style and a map with clusters are included in the result report. The method can be referenced at: Toshiro Tango and Kunihiko Takahashi (2005) <doi:10.1186/1476-072X-4-11>.
Last updated 3 years ago
2.00 score 2 scripts 259 downloadsnomogramEx - Extract Equations from a Nomogram
A nomogram can not be easily applied, because it is difficult to calculate the points or even the survival probability. The package, including a function of nomogramEx(), is to extract the polynomial equations to calculate the points of each variable, and the survival probability corresponding to the total points.
Last updated 7 years ago
2.00 score 1 stars 5 scripts 284 downloadsCsChange - Testing for Change in C-Statistic
Calculate the confidence interval and p value for change in C-statistic. The adjusted C-statistic is calculated by using formula as "Somers' Dxy rank correlation"/2+0.5. The confidence interval was calculated by using the bootstrap method. The p value was calculated by using the Z testing method. Please refer to the article of Peter Ganz et al. (2016) <doi:10.1001/jama.2016.5951>.
Last updated 2 years ago
1.85 score 2 scripts 759 downloadscon2aqi - Calculate the AQI from Pollutant Concentration
To calculate the AQI (Air Quality Index) from pollutant concentration data. O3, PM2.5, PM10, CO, SO2, and NO2 are available currently. The method can be referenced at Environmental Protection Agency, United States as follows: EPA (2016) <https://www3.epa.gov/airnow/aqi-technical-assistance-document-may2016.pdf>.
Last updated 7 years ago
1.28 score 19 scripts 158 downloadsRHSDB - Ryan-Holm Step-Down Bonferroni or Sidak Procedure
The Ryan-Holm step-down Bonferroni or Sidak procedure is to control the family-wise (experiment-wise) type I error rate in the multiple comparisons. This procedure provides the adjusting p-values and adjusting CIs. The methods used in this package are referenced from John Ludbrook (2000) <doi:10.1046/j.1440-1681.2000.03223.x>.
Last updated 2 years ago
1.00 score 234 downloadsGini - Gini Coefficient
Providing various equations to calculate Gini coefficients. The methods used in this package can be referenced from Brown MC (1994) <doi: 10.1016/0277-9536(94)90189-9>.
Last updated 3 years ago
1.00 score 5 scripts 340 downloadsSEofM - Standard Error of Measurement
To calculate the standard error of measurement (SEM) to assess the observer variability (inter- and intra-observer variation). The methods used in this package are referenced from Zoran B. Popović (2017) <doi:10.21037/cdt.2017.03.12>.
Last updated 4 years ago
1.00 score 171 downloadsHSEtest - Homogeneity of Stratum Effects Test
To test the homogeneity of stratum effects in stratified paired binary data.
Last updated 4 years ago
1.00 score 153 downloadsnumKM - Create a Kaplan-Meier Plot with Numbers at Risk
To add the table of numbers at risk below the Kaplan-Meier plot.
Last updated 5 years ago
1.00 score 1 scripts 154 downloadsgamRR - Calculate the RR for the GAM
To calculate the relative risk (RR) for the generalized additive model.
Last updated 5 years ago
1.00 score 10 scripts 235 downloadsDTAXG - Diagnostic Test Assessment in the Absence of Gold Standard
To calculate the sensitivity and specificity in the absence of gold standard using the Bayesian method. The Bayesian method can be referenced at Haiyan Gu and Qiguang Chen (1999) <doi:10.3969/j.issn.1002-3674.1999.04.004>.
Last updated 6 years ago
1.00 score 2 scripts 141 downloadsIDCard - Update Chinese ID Card Number to Eighteen Digits
The digits of the old version (before 2000 year) of 'Chinese ID Card Number' is 15, this package aims to update to the current version of 18 digits. Besides, this package can help check whether the given 'ID' is right or not.
Last updated 7 years ago
1.00 score 4 scripts 236 downloadseasyAHP - Analytic Hierarchy Process (AHP)
Given the scores from decision makers, the analytic hierarchy process can be conducted easily.
Last updated 7 years ago
1.00 score 1 scripts 116 downloadsrocNIT - Non-Inferiority Test for Paired ROC Curves
Non-inferiority test and diagnostic test are very important in clinical trails. This package is to get a p value from the non-inferiority test for ROC curves from diagnostic test.
Last updated 8 years ago
1.00 score 1 scripts 133 downloads