{"id":1540,"date":"2023-07-25T23:14:40","date_gmt":"2023-07-25T23:14:40","guid":{"rendered":"https:\/\/statorials.org\/pl\/zanikac-dzialka-altmana-r\/"},"modified":"2023-07-25T23:14:40","modified_gmt":"2023-07-25T23:14:40","slug":"zanikac-dzialka-altmana-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/zanikac-dzialka-altmana-r\/","title":{"rendered":"Jak utworzy\u0107 wykres blanda-altmana w r (krok po kroku)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/pl\/sledzenie-altmana-zanikanie\/\" target=\"_blank\" rel=\"noopener\">Wykres Blanda-Altmana<\/a> s\u0142u\u017cy do wizualizacji r\u00f3\u017cnic pomiarowych mi\u0119dzy dwoma r\u00f3\u017cnymi instrumentami lub dwiema r\u00f3\u017cnymi technikami pomiarowymi.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Jest to przydatne do okre\u015blenia, jak podobne s\u0105 dwa instrumenty lub techniki w pomiarze tego samego poj\u0119cia.<\/span><\/p>\n<p> <span style=\"color: #000000;\">W tym samouczku przedstawiono krok po kroku przyk\u0142ad tworzenia wykresu Blanda-Altmana w j\u0119zyku R.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Krok 1: Utw\u00f3rz dane<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Za\u0142\u00f3\u017cmy, \u017ce biolog u\u017cywa dw\u00f3ch r\u00f3\u017cnych przyrz\u0105d\u00f3w (A i B) do pomiaru masy tego samego zestawu 20 r\u00f3\u017cnych \u017cab w gramach.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Stworzymy nast\u0119puj\u0105c\u0105 ramk\u0119 danych w R, kt\u00f3ra reprezentuje wag\u0119 ka\u017cdej \u017caby zmierzon\u0105 przez ka\u017cdy instrument:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data<\/span>\ndf &lt;- data. <span style=\"color: #3366ff;\">frame<\/span> (A=c(5, 5, 5, 6, 6, 7, 7, 7, 8, 8, 9,\n                     10, 11, 13, 14, 14, 15, 18, 22, 25),\n                 B=c(4, 4, 5, 5, 5, 7, 8, 6, 9, 7, 7, 11,\n                     13, 13, 12, 13, 14, 19, 19, 24))\n\n<span style=\"color: #008080;\">#view first six rows of data\n<\/span>head(df)\n\n  AB\n1 5 4\n2 5 4\n3 5 5\n4 6 5\n5 6 5\n6 7 7<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Krok 2: Oblicz r\u00f3\u017cnic\u0119 pomiar\u00f3w<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Nast\u0119pnie utworzymy dwie nowe kolumny w ramce danych zawieraj\u0105ce \u015bredni pomiar ka\u017cdej \u017caby oraz r\u00f3\u017cnic\u0119 pomiar\u00f3w:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create new column for average measurement<\/span>\n<span style=\"color: #000000;\">df$avg &lt;- rowMeans(df) \n<\/span>\n<span style=\"color: #008080;\">#create new column for difference in measurements\n<span style=\"color: #000000;\">df$diff &lt;- df$A - df$B<\/span><\/span>\n\n<span style=\"color: #008080;\">#view first six rows of data\n<\/span>head(df)\n\n  AB avg diff\n1 5 4 4.5 1\n2 5 4 4.5 1\n3 5 5 5.0 0\n4 6 5 5.5 1\n5 6 5 5.5 1\n6 7 7 7.0 0\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Krok 3: Oblicz \u015bredni\u0105 r\u00f3\u017cnic\u0119 i przedzia\u0142 ufno\u015bci<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Nast\u0119pnie obliczymy \u015bredni\u0105 r\u00f3\u017cnic\u0119 pomiar\u00f3w pomi\u0119dzy dwoma instrumentami oraz g\u00f3rn\u0105 i doln\u0105 granic\u0119 95% przedzia\u0142u ufno\u015bci dla \u015bredniej r\u00f3\u017cnicy:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#find average difference<\/span>\n<span style=\"color: #000000;\">mean_diff &lt;- mean(df$diff)\n\nmean_diff\n\n[1] 0.5\n<\/span>\n<span style=\"color: #008080;\">#find lower 95% confidence interval limits\n<span style=\"color: #000000;\">lower &lt;- mean_diff - 1.96*sd(df$diff)<\/span>\n\n<span style=\"color: #000000;\">lower\n\n[1] -1.921465\n<\/span>\n#find upper 95% confidence interval limits\n<span style=\"color: #000000;\">upper &lt;- mean_diff + 1.96*sd(df$diff)<\/span>\n\n<span style=\"color: #000000;\">upper<\/span>\n\n<span style=\"color: #000000;\">[1] 2.921465\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Okazuje si\u0119, \u017ce \u015brednia r\u00f3\u017cnica wynosi <strong>0,5<\/strong> , a 95% przedzia\u0142 ufno\u015bci dla \u015bredniej r\u00f3\u017cnicy wynosi <strong>[-1,921, 2,921]<\/strong> .<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Krok 4: Utw\u00f3rz wykres Blanda-Altmana<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">Nast\u0119pnie u\u017cyjemy poni\u017cszego kodu do utworzenia wykresu Blanda-Altmana przy u\u017cyciu pakietu wizualizacji danych <a href=\"https:\/\/ggplot2.tidyverse.org\/\" target=\"_blank\" rel=\"noopener\">ggplot2<\/a> :<\/span><\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span><span style=\"color: #008080;\">#load ggplot2\n<\/span><\/span><span style=\"color: #000000;\"><span style=\"color: #993300;\">library<\/span> (ggplot2)\n\n<span style=\"color: #008080;\">#create Bland-Altman plot\n<\/span>ggplot(df, <span style=\"color: #3366ff;\">aes<\/span> (x = avg, y = diff)) +\n  geom_point(size=2) +\n  geom_hline(yintercept = mean_diff) +\n  geom_hline(yintercept = lower, color = \" <span style=\"color: #008000;\">red<\/span> \", linetype=\" <span style=\"color: #008000;\">dashed<\/span> \") +\n  geom_hline(yintercept = upper, color = \" <span style=\"color: #008000;\">red<\/span> \", linetype=\" <span style=\"color: #008000;\">dashed<\/span> \") +\n  ggtitle(\" <span style=\"color: #008000;\">Bland-Altman Plot<\/span> \") +\n  ylab(\" <span style=\"color: #008000;\">Difference Between Measurements<\/span> \") +\n  xlab(\" <span style=\"color: #008000;\">Average Measurement<\/span> \")<\/span><\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-15305\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/fader1.png\" alt=\"Dzia\u0142ka Blanda-Altmana w R\" width=\"468\" height=\"455\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">O\u015b x wykresu przedstawia \u015bredni pomiar dokonany przez dwa instrumenty, a o\u015b y przedstawia r\u00f3\u017cnic\u0119 w pomiarach pomi\u0119dzy dwoma instrumentami.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Czarna linia przedstawia \u015bredni\u0105 r\u00f3\u017cnic\u0119 pomiar\u00f3w mi\u0119dzy dwoma instrumentami, podczas gdy dwie czerwone linie przerywane przedstawiaj\u0105 granice 95% przedzia\u0142u ufno\u015bci dla \u015bredniej r\u00f3\u017cnicy.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Wykres Blanda-Altmana s\u0142u\u017cy do wizualizacji r\u00f3\u017cnic pomiarowych mi\u0119dzy dwoma r\u00f3\u017cnymi instrumentami lub dwiema r\u00f3\u017cnymi technikami pomiarowymi. Jest to przydatne do okre\u015blenia, jak podobne s\u0105 dwa instrumenty lub techniki w pomiarze tego samego poj\u0119cia. W tym samouczku przedstawiono krok po kroku przyk\u0142ad tworzenia wykresu Blanda-Altmana w j\u0119zyku R. Krok 1: Utw\u00f3rz dane Za\u0142\u00f3\u017cmy, \u017ce biolog u\u017cywa [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-1540","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Jak utworzy\u0107 wykres Blanda-Altmana w R (krok po kroku)<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak utworzy\u0107 wykres Blanda-Altmana w j\u0119zyku R, \u0142\u0105cznie z przyk\u0142adem krok po kroku.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/pl\/zanikac-dzialka-altmana-r\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak utworzy\u0107 wykres Blanda-Altmana w R (krok po kroku)\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak utworzy\u0107 wykres Blanda-Altmana w j\u0119zyku R, \u0142\u0105cznie z przyk\u0142adem krok po kroku.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/zanikac-dzialka-altmana-r\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-25T23:14:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/fader1.png\" \/>\n<meta name=\"author\" content=\"Benjamin Anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Napisane przez\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin Anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Szacowany czas czytania\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pl\/zanikac-dzialka-altmana-r\/\",\"url\":\"https:\/\/statorials.org\/pl\/zanikac-dzialka-altmana-r\/\",\"name\":\"Jak utworzy\u0107 wykres Blanda-Altmana w R (krok po kroku)\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-25T23:14:40+00:00\",\"dateModified\":\"2023-07-25T23:14:40+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak utworzy\u0107 wykres Blanda-Altmana w j\u0119zyku R, \u0142\u0105cznie z przyk\u0142adem krok po kroku.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/zanikac-dzialka-altmana-r\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/zanikac-dzialka-altmana-r\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/zanikac-dzialka-altmana-r\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak utworzy\u0107 wykres blanda-altmana w r (krok po kroku)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/pl\/#website\",\"url\":\"https:\/\/statorials.org\/pl\/\",\"name\":\"Statorials\",\"description\":\"Tw\u00f3j przewodnik po kompetencjach statystycznych!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/pl\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pl-PL\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\",\"name\":\"Benjamin Anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pl-PL\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin Anderson\"},\"description\":\"Cze\u015b\u0107, jestem Benjamin i jestem emerytowanym profesorem statystyki, kt\u00f3ry zosta\u0142 oddanym nauczycielem Statorials. 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