{
  "_id": "6a16ab3dacfb0bcc41d84172",
  "Package": "powerSurvEpi",
  "Version": "0.1.5",
  "Date": "2025-06-22",
  "Title": "Power and Sample Size Calculation for Survival Analysis of\nEpidemiological Studies",
  "Authors@R": "c(person(given = \"Weiliang\",\nfamily = \"Qiu\",\nrole = c(\"aut\", \"cre\"),\nemail = \"weiliang.qiu@gmail.com\"),\nperson(given = \"Jorge\",\nfamily = \"Chavarro\",\nrole = \"aut\"),\nperson(given = \"Ross\",\nfamily = \"Lazarus\",\nrole = \"aut\"),\nperson(given = \"Bernard\",\nfamily = \"Rosner\",\nrole = \"aut\"),\nperson(given = \"Jing\",\nfamily = \"Ma\",\nrole = \"aut\"))",
  "Maintainer": "Weiliang Qiu <weiliang.qiu@gmail.com>",
  "Description": "Functions to calculate power and sample size for testing\nmain effect or interaction effect in the survival analysis of\nepidemiological studies (non-randomized studies), taking into\naccount the correlation between the covariate of the interest\nand other covariates. Some calculations also take into account\nthe competing risks and stratified analysis. This package also\nincludes a set of functions to calculate power and sample size\nfor testing main effect in the survival analysis of randomized\nclinical trials and conditional logistic regression for nested\ncase-control study.",
  "License": "GPL (>= 2)",
  "NeedsCompilation": "no",
  "Packaged": {
    "Date": "2026-05-27 08:25:22 UTC",
    "User": "root"
  },
  "Author": "Weiliang Qiu [aut, cre], Jorge Chavarro [aut], Ross Lazarus\n[aut], Bernard Rosner [aut], Jing Ma [aut]",
  "Repository": "https://weiliang.r-universe.dev",
  "Date/Publication": "2025-06-22 21:32:38 UTC",
  "RemoteUrl": "https://github.com/cran/powerSurvEpi",
  "RemoteRef": "HEAD",
  "RemoteSha": "5d35bae5b61613f15a5ebffd2d2414a5b263256c",
  "MD5sum": "7feedca4af4bdd83039c88028bb1af9f",
  "_user": "weiliang",
  "_type": "src",
  "_file": "powerSurvEpi_0.1.5.tar.gz",
  "_fileid": "b50cbea576adee84a9222f641c0bf67a77f0d90300e0f7ec91032998d6f2f6e5",
  "_filesize": 485184,
  "_sha256": "b50cbea576adee84a9222f641c0bf67a77f0d90300e0f7ec91032998d6f2f6e5",
  "_created": "2026-05-27T08:25:22.000Z",
  "_published": "2026-05-27T08:28:45.278Z",
  "_distro": "noble",
  "_jobs": [
    {
      "job": 78037319246,
      "time": 118,
      "config": "linux-devel-x86_64",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "7235558951"
    },
    {
      "job": 78037319223,
      "time": 113,
      "config": "linux-release-x86_64",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7235557247"
    },
    {
      "job": 78037319274,
      "time": 153,
      "config": "macos-oldrel-arm64",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "7235562059"
    },
    {
      "job": 78037319218,
      "time": 162,
      "config": "macos-release-arm64",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7235562738"
    },
    {
      "job": 78036906020,
      "time": 155,
      "config": "source",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7235516045"
    },
    {
      "job": 78037319215,
      "time": 93,
      "config": "wasm-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7235550804"
    },
    {
      "job": 78037319213,
      "time": 84,
      "config": "windows-devel",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "7235547285"
    },
    {
      "job": 78037319232,
      "time": 91,
      "config": "windows-oldrel",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "7235549713"
    },
    {
      "job": 78037319194,
      "time": 92,
      "config": "windows-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7235550526"
    }
  ],
  "_buildurl": "https://github.com/r-universe/weiliang/actions/runs/26499741909",
  "_status": "success",
  "_host": "GitHub-Actions",
  "_upstream": "https://github.com/cran/powerSurvEpi",
  "_commit": {
    "id": "5d35bae5b61613f15a5ebffd2d2414a5b263256c",
    "author": "Weiliang Qiu <weiliang.qiu@gmail.com>",
    "committer": "cran-robot <csardi.gabor+cran@gmail.com>",
    "message": "version 0.1.5\n",
    "time": 1750627958
  },
  "_maintainer": {
    "name": "Weiliang Qiu",
    "email": "weiliang.qiu@gmail.com",
    "login": "weiliang",
    "description": "",
    "uuid": 755168
  },
  "_registered": true,
  "_dependencies": [
    {
      "package": "R",
      "version": ">= 3.6.0",
      "role": "Depends"
    },
    {
      "package": "stats",
      "role": "Imports"
    },
    {
      "package": "survival",
      "role": "Imports"
    },
    {
      "package": "pracma",
      "role": "Imports"
    }
  ],
  "_owner": "cran",
  "_selfowned": true,
  "_usedby": 2,
  "_updates": [
    {
      "week": "2025-25",
      "n": 1
    }
  ],
  "_tags": [
    {
      "name": "0.1.5",
      "date": "2025-06-22"
    }
  ],
  "_stars": 0,
  "_contributors": [
    {
      "user": "weiliangqiu",
      "count": 4,
      "uuid": 22828973
    },
    {
      "user": "weiliang",
      "count": 3,
      "uuid": 755168
    }
  ],
  "_userbio": {
    "uuid": 755168,
    "type": "user",
    "name": "weiliang"
  },
  "_downloads": {
    "count": 943,
    "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/powerSurvEpi"
  },
  "_mentions": 22,
  "_searchresults": 95,
  "_rbuild": "4.6.0",
  "_assets": [
    "extra/citation.cff",
    "extra/citation.html",
    "extra/citation.json",
    "extra/citation.txt",
    "extra/contents.json",
    "extra/NEWS.html",
    "extra/NEWS.txt",
    "extra/powerSurvEpi.html",
    "manual.pdf"
  ],
  "_realowner": "weiliang",
  "_cranurl": false,
  "_releases": [
    {
      "version": "0.0.5",
      "date": "2009-04-17"
    },
    {
      "version": "0.0.6",
      "date": "2012-03-31"
    },
    {
      "version": "0.0.9",
      "date": "2015-07-24"
    },
    {
      "version": "0.1.0",
      "date": "2018-02-07"
    },
    {
      "version": "0.1.1",
      "date": "2021-01-08"
    },
    {
      "version": "0.1.3",
      "date": "2021-03-01"
    },
    {
      "version": "0.1.5",
      "date": "2025-06-22"
    }
  ],
  "_exports": [
    "numDEpi",
    "numDEpi.default",
    "power.stratify",
    "powerConLogistic.bin",
    "powerConLogistic.con",
    "powerCT",
    "powerCT.default",
    "powerCT.default0",
    "powerEpi",
    "powerEpi.default",
    "powerEpiCont",
    "powerEpiCont.default",
    "powerEpiInt",
    "powerEpiInt.default0",
    "powerEpiInt.default1",
    "powerEpiInt2",
    "powerWelchT",
    "ssize.stratify",
    "ssizeCT",
    "ssizeCT.default",
    "ssizeEpi",
    "ssizeEpi.default",
    "ssizeEpiCont",
    "ssizeEpiCont.default",
    "ssizeEpiInt",
    "ssizeEpiInt.default0",
    "ssizeEpiInt.default1",
    "ssizeEpiInt2",
    "ssizeWelchT"
  ],
  "_datasets": [
    {
      "name": "Oph",
      "title": "Ophthalmology Data",
      "object": "Oph",
      "file": "Oph.csv.gz",
      "class": [
        "data.frame"
      ],
      "fields": [
        "times",
        "status",
        "group"
      ],
      "rows": 354,
      "table": true,
      "tojson": true
    }
  ],
  "_help": [
    {
      "page": "numDEpi",
      "title": "Calculate Number of Deaths Required for Cox Proportional Hazards Regression with Two Covariates for Epidemiological Studies",
      "topics": [
        "numDEpi"
      ]
    },
    {
      "page": "numDEpi.default",
      "title": "Calculate Number of Deaths Required for Cox Proportional Hazards Regression with Two Covariates for Epidemiological Studies",
      "topics": [
        "numDEpi.default"
      ]
    },
    {
      "page": "Oph",
      "title": "Ophthalmology Data",
      "topics": [
        "Oph"
      ]
    },
    {
      "page": "power.stratify",
      "title": "Power Calculation for Survival Analysis with Binary Predictor and Exponential Survival Function",
      "topics": [
        "power.stratify"
      ]
    },
    {
      "page": "powerConLogistic.bin",
      "title": "Sample Size Calculation for Conditional Logistic Regression with Binary Covariate",
      "topics": [
        "powerConLogistic.bin"
      ]
    },
    {
      "page": "powerConLogistic.con",
      "title": "Sample Size Calculation for Conditional Logistic Regression with Continuous Covariate",
      "topics": [
        "powerConLogistic.con"
      ]
    },
    {
      "page": "powerCT",
      "title": "Power Calculation in the Analysis of Survival Data for Clinical Trials",
      "topics": [
        "powerCT"
      ]
    },
    {
      "page": "powerCT.default",
      "title": "Power Calculation in the Analysis of Survival Data for Clinical Trials",
      "topics": [
        "powerCT.default"
      ]
    },
    {
      "page": "powerCT.default0",
      "title": "Power Calculation in the Analysis of Survival Data for Clinical Trials",
      "topics": [
        "powerCT.default0"
      ]
    },
    {
      "page": "powerEpi",
      "title": "Power Calculation for Cox Proportional Hazards Regression with Two Covariates for Epidemiological Studies",
      "topics": [
        "powerEpi"
      ]
    },
    {
      "page": "powerEpi.default",
      "title": "Power Calculation for Cox Proportional Hazards Regression with Two Covariates for Epidemiological Studies",
      "topics": [
        "powerEpi.default"
      ]
    },
    {
      "page": "powerEpiCont",
      "title": "Power Calculation for Cox Proportional Hazards Regression with Nonbinary Covariates for Epidemiological Studies",
      "topics": [
        "powerEpiCont"
      ]
    },
    {
      "page": "powerEpiCont.default",
      "title": "Power Calculation for Cox Proportional Hazards Regression with Nonbinary Covariates for Epidemiological Studies",
      "topics": [
        "powerEpiCont.default"
      ]
    },
    {
      "page": "powerEpiInt",
      "title": "Power Calculation Testing Interaction Effect for Cox Proportional Hazards Regression with two covariates for Epidemiological Studies (Both covariates should be binary)",
      "topics": [
        "powerEpiInt"
      ]
    },
    {
      "page": "powerEpiInt.default0",
      "title": "Power Calculation Testing Interaction Effect for Cox Proportional Hazards Regression",
      "topics": [
        "powerEpiInt.default0"
      ]
    },
    {
      "page": "powerEpiInt.default1",
      "title": "Power Calculation Testing Interaction Effect for Cox Proportional Hazards Regression",
      "topics": [
        "powerEpiInt.default1"
      ]
    },
    {
      "page": "powerEpiInt2",
      "title": "Power Calculation Testing Interaction Effect for Cox Proportional Hazards Regression",
      "topics": [
        "powerEpiInt2"
      ]
    },
    {
      "page": "powerWelchT",
      "title": "Power of Two-Sided Two Sample T Test With Unequal Variances And Unequal Sample Sizes",
      "topics": [
        "powerWelchT"
      ]
    },
    {
      "page": "ssize.stratify",
      "title": "Sample size calculation for Survival Analysis with Binary Predictor and Exponential Survival Function",
      "topics": [
        "ssize.stratify"
      ]
    },
    {
      "page": "ssizeCT",
      "title": "Sample Size Calculation in the Analysis of Survival Data for Clinical Trials",
      "topics": [
        "ssizeCT"
      ]
    },
    {
      "page": "ssizeCT.default",
      "title": "Sample Size Calculation in the Analysis of Survival Data for Clinical Trials",
      "topics": [
        "ssizeCT.default"
      ]
    },
    {
      "page": "ssizeEpi",
      "title": "Sample Size Calculation for Cox Proportional Hazards Regression",
      "topics": [
        "ssizeEpi"
      ]
    },
    {
      "page": "ssizeEpi.default",
      "title": "Sample Size Calculation for Cox Proportional Hazards Regression",
      "topics": [
        "ssizeEpi.default"
      ]
    },
    {
      "page": "ssizeEpiCont",
      "title": "Sample Size Calculation for Cox Proportional Hazards Regression with Nonbinary Covariates for Epidemiological Studies",
      "topics": [
        "ssizeEpiCont"
      ]
    },
    {
      "page": "ssizeEpiCont.default",
      "title": "Sample Size Calculation for Cox Proportional Hazards Regression with Nonbinary Covariates for Epidemiological Studies",
      "topics": [
        "ssizeEpiCont.default"
      ]
    },
    {
      "page": "ssizeEpiInt",
      "title": "Sample Size Calculation Testing Interaction Effect for Cox Proportional Hazards Regression",
      "topics": [
        "ssizeEpiInt"
      ]
    },
    {
      "page": "ssizeEpiInt.default0",
      "title": "Sample Size Calculation Testing Interaction Effect for Cox Proportional Hazards Regression",
      "topics": [
        "ssizeEpiInt.default0"
      ]
    },
    {
      "page": "ssizeEpiInt.default1",
      "title": "Sample Size Calculation Testing Interaction Effect for Cox Proportional Hazards Regression",
      "topics": [
        "ssizeEpiInt.default1"
      ]
    },
    {
      "page": "ssizeEpiInt2",
      "title": "Sample Size Calculation Testing Interaction Effect for Cox Proportional Hazards Regression",
      "topics": [
        "ssizeEpiInt2"
      ]
    },
    {
      "page": "ssizeWelchT",
      "title": "Sample Size Calculation For Two-Sided Two Sample T Test With Unequal Variances And Unequal Sample Sizes",
      "topics": [
        "ssizeWelchT"
      ]
    }
  ],
  "_rundeps": [
    "lattice",
    "Matrix",
    "pracma",
    "survival"
  ],
  "_score": 3.7558748556724915,
  "_indexed": true,
  "_nocasepkg": "powersurvepi",
  "_universes": [
    "weiliang"
  ],
  "_binaries": [
    {
      "r": "4.7.0",
      "os": "linux",
      "version": "0.1.5",
      "date": "2026-05-27T08:27:16.000Z",
      "distro": "noble",
      "commit": "5d35bae5b61613f15a5ebffd2d2414a5b263256c",
      "fileid": "9d49f5e3d518d80975295f1e15a169cb938772078d4d65dba26c182083ccc90a",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/weiliang/actions/runs/26499741909"
    },
    {
      "r": "4.6.0",
      "os": "linux",
      "version": "0.1.5",
      "date": "2026-05-27T08:27:11.000Z",
      "distro": "noble",
      "commit": "5d35bae5b61613f15a5ebffd2d2414a5b263256c",
      "fileid": "109b5625a2e7fd7744b0aaa92c16eefffd1a0c11ccd367c1c4112b3d64d48314",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/weiliang/actions/runs/26499741909"
    },
    {
      "r": "4.5.3",
      "os": "mac",
      "version": "0.1.5",
      "date": "2026-05-27T08:27:34.000Z",
      "commit": "5d35bae5b61613f15a5ebffd2d2414a5b263256c",
      "fileid": "5bbe99dd262a05ec42ee6ebfca6a3d438ba92b8279a5bc6cd7c65b9be153b1d8",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/weiliang/actions/runs/26499741909"
    },
    {
      "r": "4.6.0",
      "os": "mac",
      "version": "0.1.5",
      "date": "2026-05-27T08:27:31.000Z",
      "commit": "5d35bae5b61613f15a5ebffd2d2414a5b263256c",
      "fileid": "3c1dbb949d1b7f942b1036f5212d4fb013a59f238faabadc0c7a5f1b4649b82c",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/weiliang/actions/runs/26499741909"
    },
    {
      "r": "4.6.0",
      "os": "wasm",
      "version": "0.1.5",
      "date": "2026-05-27T08:27:16.000Z",
      "commit": "5d35bae5b61613f15a5ebffd2d2414a5b263256c",
      "fileid": "933934f3270aab9ec50df3bdeb8c24434c3290a764b22e4dcdeb39b12b85e93b",
      "status": "success",
      "buildurl": "https://github.com/r-universe/weiliang/actions/runs/26499741909"
    },
    {
      "r": "4.7.0",
      "os": "win",
      "version": "0.1.5",
      "date": "2026-05-27T08:26:35.000Z",
      "commit": "5d35bae5b61613f15a5ebffd2d2414a5b263256c",
      "fileid": "aa6116f1ffc6d8ef07453b78cd06e7bd1023a9f5ede3cd63890cd3655f842e8a",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/weiliang/actions/runs/26499741909"
    },
    {
      "r": "4.5.3",
      "os": "win",
      "version": "0.1.5",
      "date": "2026-05-27T08:26:40.000Z",
      "commit": "5d35bae5b61613f15a5ebffd2d2414a5b263256c",
      "fileid": "61ac1a9e4a12d1e024672ad679c857835e2b52474d1e37b1244c615e71a837a6",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/weiliang/actions/runs/26499741909"
    },
    {
      "r": "4.6.0",
      "os": "win",
      "version": "0.1.5",
      "date": "2026-05-27T08:26:46.000Z",
      "commit": "5d35bae5b61613f15a5ebffd2d2414a5b263256c",
      "fileid": "70173aab0f90cfa6c0787fff135550ac67d851e976b017a7e4c63ed0b000a880",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/weiliang/actions/runs/26499741909"
    }
  ]
}