{"id":476,"date":"2018-08-31T07:58:12","date_gmt":"2018-08-30T22:58:12","guid":{"rendered":"https:\/\/best-biostatistics.com\/toukei-er\/entry\/how-to-calculate-nnh-in-r\/"},"modified":"2024-10-13T14:33:39","modified_gmt":"2024-10-13T05:33:39","slug":"how-to-calculate-nnh-in-r","status":"publish","type":"post","link":"https:\/\/best-biostatistics.com\/toukei-er\/entry\/how-to-calculate-nnh-in-r\/","title":{"rendered":"R \u3067 NNH Number Needed to Harm \u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"\n<p>\u6709\u5bb3\u5fc5\u8981\u6570\uff08Number Needed to Harm, NNH\uff09\u306f\u30011\u4eba\u306e\u6709\u5bb3\u4e8b\u8c61\u304c\u8d77\u3053\u308b\u4eba\u304c\u51fa\u73fe\u3059\u308b\u306e\u306b\u3001\u4f55\u304b\u306e\u5f71\u97ff\u3092\u53d7\u3051\u305f\u4eba\u304c\u4f55\u4eba\u5fc5\u8981\u304b\u3068\u3044\u3046\u6570\u3002<\/p>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\" id=\"NNH\u3092\u8a08\u7b97\u3059\u308b\u306b\u306f\u3069\u3046\u3084\u308b\u304b\">NNH\u3092\u8a08\u7b97\u3059\u308b\u306b\u306f\u3069\u3046\u3084\u308b\u304b\uff1f<\/h2>\n\n\n\n<p>\u4f7f\u3048\u308b\u30b7\u30c1\u30e5\u30a8\u30fc\u30b7\u30e7\u30f3\u306f\u3001<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u66dd\u9732A\u3092\u53d7\u3051\u308b\u4eba\u53d7\u3051\u306a\u3044\u4eba<\/li>\n\n\n\n<li>\u51e6\u7f6eB\u3092\u53d7\u3051\u308b\u4eba\u53d7\u3051\u306a\u3044\u4eba<\/li>\n\n\n\n<li>\u4ecb\u5165C\u3092\u53d7\u3051\u308b\u4eba\u53d7\u3051\u306a\u3044\u4eba<\/li>\n<\/ul>\n\n\n\n<p>\u306a\u3069\u306a\u3069\u3002<\/p>\n\n\n\n<p>R \u3067\u8a08\u7b97\u3059\u308b\u306a\u3089\u3001\u4ee5\u4e0b\u306e\u81ea\u4f5c\u306e\u95a2\u6570\u3092\u4f7f\u3063\u3066\u8a08\u7b97\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>riskdiff.confint &lt;- function(r1,n1,r2,n2,sig.level=.05,side=2){\np1 &lt;- r1\/n1\np2 &lt;- r2\/n2\ndiff &lt;- p1 - p2\nse &lt;- sqrt(p1*(1-p1)\/n1 + p2*(1-p2)\/n2)\nLL &lt;- diff - qnorm(sig.level\/side, lower.tail=FALSE)*se\nUL &lt;- diff + qnorm(sig.level\/side, lower.tail=FALSE)*se\nNNH &lt;- 1\/diff\nNNH.LL &lt;- 1\/UL\nNNH.UL &lt;- 1\/LL\nc(round(c(Prop.G1=p1,Prop.G2=p2,Difference=diff,LL.95CI=LL,UL.95CI=UL)*100,1),round(c(NNH=NNH,NNH.LL=NNH.LL,NNH.UL=NNH.UL),0))\n}<\/code><\/pre>\n\n\n\n<p>\u5fc5\u8981\u306a\u60c5\u5831\u3092\u30a4\u30f3\u30d7\u30c3\u30c8\u3057\u305f\u3089\u3001\u7b54\u3048\u304c\u51fa\u308b\u3002<\/p>\n\n\n\n<p>\u30b0\u30eb\u30fc\u30d71\u306e\u5206\u6bcd\u304c532\u4eba\u3001\u305d\u306e\u3046\u3061\u30a4\u30d9\u30f3\u30c8\u304c\u8d77\u304d\u305f\u3001\u3059\u306a\u308f\u3061\u5206\u5b50\u304c11\u4eba\u3001<\/p>\n\n\n\n<p>\u30b0\u30eb\u30fc\u30d72\u306e\u5206\u6bcd\u304c933\u4eba\u3001\u305d\u306e\u3046\u3061\u30a4\u30d9\u30f3\u30c8\u304c\u8d77\u304d\u305f\u3001\u3059\u306a\u308f\u3061\u5206\u5b50\u304c3\u4eba<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">riskdiff.confint(r1=11,n1=532,r2=3,n2=933)<\/pre>\n\n\n\n<p>\u8a08\u7b97\u7d50\u679c\u306f\u3001\u4ee5\u4e0b\u306e\u901a\u308a\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Prop.G1\uff1a\u30b0\u30eb\u30fc\u30d71\u306e\u767a\u73fe\u5272\u5408<\/li>\n\n\n\n<li>Prop.G2\uff1a\u30b0\u30eb\u30fc\u30d72\u306e\u767a\u73fe\u5272\u5408<\/li>\n\n\n\n<li>Difference\uff1a\u30b0\u30eb\u30fc\u30d71\u30682\u306e\u767a\u73fe\u5272\u5408\u306e\u5dee<\/li>\n\n\n\n<li>LL.95CI\uff1a\u767a\u73fe\u5272\u5408\u306e\u5dee\u306e95%\u4fe1\u983c\u533a\u9593\uff08CI\uff09\u4e0b\u9650<\/li>\n\n\n\n<li>UL.95CI\uff1a\u767a\u73fe\u5272\u5408\u306e\u5dee\u306e95%CI\u306e\u4e0a\u9650<\/li>\n\n\n\n<li>NNH\uff1a\u6709\u5bb3\u5fc5\u8981\u6570<\/li>\n\n\n\n<li>NNH.LL\uff1a\u6709\u5bb3\u5fc5\u8981\u6570\u306e95%CI\u306e\u4e0b\u9650<\/li>\n\n\n\n<li>NNH.UL\uff1a\u6709\u5bb3\u5fc5\u8981\u6570\u306e95%CI\u4e0a\u9650<\/li>\n<\/ul>\n\n\n\n<p>\u3064\u307e\u308a\u3001\u767a\u73fe\u5272\u5408\u306e\u5dee\u304c\u7d041.7%\u3060\u3068\u3001\u305d\u306e\u9006\u657057\u304c\u3001\u6709\u5bb3\u5fc5\u8981\u6570\u3068\u8a08\u7b97\u3055\u308c\u308b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&gt; riskdiff.confint(r1=11,n1=532,r2=3,n2=933)\nProp.G1    Prop.G2 Difference    LL.95CI    UL.95CI        NNH     NNH.LL     NNH.UL\n2.1        0.3        1.7        0.5        3.0       57.0       33.0      207.0\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u6cbb\u7642\u6570 NNT \u3068\u306e\u95a2\u4fc2<\/h2>\n\n\n\n<p>\u6cbb\u7642\u5fc5\u8981\u6570\uff08Number Needed to Treat\uff09\u3068\u540c\u3058\u8a08\u7b97\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p>\u300c\u6cbb\u7642\u3057\u3066\u3088\u304f\u306a\u308b\u4eba\u3092\u898b\u51fa\u3059\u305f\u3081\u306b\u4f55\u4eba\u5fc5\u8981\u304b\u300d\u3068\u3001\u300c\u6709\u5bb3\u306a\u30a4\u30d9\u30f3\u30c8\u304c\u8d77\u304d\u3066\u3057\u307e\u3046\u306e\u306f\u4f55\u4eba\u6cbb\u7642\u3057\u305f\u3068\u304d\u304b\u300d\u306f\u3001\u8a08\u7b97\u3068\u3057\u3066\u306f\u540c\u3058\u3053\u3068\u3002<\/p>\n\n\n\n<div id=\"biost-2114709243\" class=\"biost- biost-entity-placement\"><p style=\"text-align: center;\"><span style=\"font-size: 20px;\"><strong><a href=\"https:\/\/best-biostatistics.com\/kmhl\">\uff1e\uff1e\u3082\u3046\u7d71\u8a08\u3067\u60a9\u3080\u306e\u306f\u7d42\u308f\u308a\u306b\u3057\u307e\u305b\u3093\u304b\uff1f\u00a0<\/a><\/strong><\/span><\/p>\r\n<a href=\"https:\/\/best-biostatistics.com\/kmhl\"><img class=\"aligncenter wp-image-2794 size-full\" src=\"https:\/\/best-biostatistics.com\/wp\/wp-content\/uploads\/2023\/11\/bn_r_03.png\" alt=\"\" width=\"500\" height=\"327\" \/><\/a>\r\n<p style=\"text-align: center;\"><span style=\"color: #ff0000; font-size: 20px;\"><strong><span class=\"marker2\">\u21911\u4e07\u4eba\u4ee5\u4e0a\u306e\u533b\u7642\u5f93\u4e8b\u8005\u304c\u8cfc\u8aad\u4e2d<\/span><\/strong><\/span><\/p><\/div><h2 class=\"wp-block-heading\" id=\"\u307e\u3068\u3081\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u767a\u73fe\u7387\u306e\u5dee\u306e\u9006\u6570\u304cNNH\u3002<\/p>\n\n\n\n<p>\u95a2\u6570\u3092 R \u3067\u81ea\u4f5c\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u53c2\u8003\u306b\u306a\u308c\u3070\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u53c2\u8003\u66f8\u7c4d\">\u53c2\u8003\u66f8\u7c4d<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><a class=\"hatena-asin-detail-image-link\" href=\"https:\/\/www.amazon.co.jp\/dp\/4914903741?tag=ttyotani-22&amp;linkCode=ogi&amp;th=1&amp;psc=1\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/m.media-amazon.com\/images\/I\/51oWZ1rSgGL._SL500_.jpg\" alt=\"\u4fe1\u983c\u6027\u306e\u7d71\u8a08\u5b66: \u4fe1\u983c\u533a\u9593\u304a\u3088\u3073\u7d71\u8a08\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\" title=\"\u4fe1\u983c\u6027\u306e\u7d71\u8a08\u5b66: \u4fe1\u983c\u533a\u9593\u304a\u3088\u3073\u7d71\u8a08\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\"\/><\/a><\/figure>\n\n\n\n<div class=\"hatena-asin-detail\"><\/div>\n\n\n\n<div class=\"hatena-asin-detail-info\">\n<p class=\"hatena-asin-detail-title\"><a href=\"https:\/\/www.amazon.co.jp\/dp\/4914903741?tag=ttyotani-22&amp;linkCode=ogi&amp;th=1&amp;psc=1\" target=\"_blank\" rel=\"noopener\">\u4fe1\u983c\u6027\u306e\u7d71\u8a08\u5b66: \u4fe1\u983c\u533a\u9593\u304a\u3088\u3073\u7d71\u8a08\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/a><\/p>\n<ul class=\"hatena-asin-detail-meta\">\n<li><span class=\"hatena-asin-detail-label\">\u4f5c\u8005:<\/span><a href=\"https:\/\/d.hatena.ne.jp\/keyword\/Martin%20J.Gardner\" class=\"keyword\">Martin J.Gardner<\/a>,<a href=\"https:\/\/d.hatena.ne.jp\/keyword\/Douglas%20G.Altman\" class=\"keyword\">Douglas G.Altman<\/a><\/li>\n<li>\u30b5\u30a4\u30a8\u30f3\u30c6\u30a3\u30b9\u30c8\u793e<\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.amazon.co.jp\/dp\/4914903741?tag=ttyotani-22&amp;linkCode=ogi&amp;th=1&amp;psc=1\" class=\"asin-detail-buy\" target=\"_blank\" rel=\"noopener\">Amazon<\/a><\/p>\n<\/div>\n\n\n\n<div class=\"hatena-asin-detail\"><a href=\"https:\/\/www.amazon.co.jp\/dp\/B006QWP39O?tag=ttyotani-22&amp;linkCode=ogi&amp;th=1&amp;psc=1\" class=\"hatena-asin-detail-image-link\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/m.media-amazon.com\/images\/I\/51UhNQyuHjL._SL500_.jpg\" class=\"hatena-asin-detail-image\" alt=\"Clinical Epidemiology: How to Do Clinical Practice Research (CLINICAL EPIDEMIOLOGY (SACKETT)) (English Edition)\" title=\"Clinical Epidemiology: How to Do Clinical Practice Research (CLINICAL EPIDEMIOLOGY (SACKETT)) (English Edition)\"><\/a>\n<div class=\"hatena-asin-detail-info\">\n<p class=\"hatena-asin-detail-title\"><a href=\"https:\/\/www.amazon.co.jp\/dp\/B006QWP39O?tag=ttyotani-22&amp;linkCode=ogi&amp;th=1&amp;psc=1\" target=\"_blank\" rel=\"noopener\">Clinical Epidemiology: How to Do Clinical Practice Research (CLINICAL EPIDEMIOLOGY (SACKETT)) (English Edition)<\/a><\/p>\n<ul class=\"hatena-asin-detail-meta\">\n<li><span class=\"hatena-asin-detail-label\">\u4f5c\u8005:<\/span><a href=\"https:\/\/d.hatena.ne.jp\/keyword\/Haynes%2C%20R.%20Brian\" class=\"keyword\">Haynes, R. Brian<\/a>,<a href=\"https:\/\/d.hatena.ne.jp\/keyword\/Sackett%2C%20David%20L.\" class=\"keyword\">Sackett, David L.<\/a>,<a href=\"https:\/\/d.hatena.ne.jp\/keyword\/Guyatt%2C%20Gordon%20H.\" class=\"keyword\">Guyatt, Gordon H.<\/a>,<a href=\"https:\/\/d.hatena.ne.jp\/keyword\/Tugwell%2C%20Peter\" class=\"keyword\">Tugwell, Peter<\/a><\/li>\n<li>LWW<\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.amazon.co.jp\/dp\/B006QWP39O?tag=ttyotani-22&amp;linkCode=ogi&amp;th=1&amp;psc=1\" class=\"asin-detail-buy\" target=\"_blank\" rel=\"noopener\">Amazon<\/a><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u6709\u5bb3\u5fc5\u8981\u6570\uff08Number Needed to Harm, NNH\uff09\u306f\u30011\u4eba\u306e\u6709\u5bb3\u4e8b\u8c61\u304c\u8d77\u3053\u308b\u4eba\u304c\u51fa\u73fe\u3059\u308b\u306e\u306b\u3001\u4f55\u304b\u306e\u5f71\u97ff\u3092\u53d7\u3051\u305f\u4eba\u304c\u4f55\u4eba\u5fc5\u8981\u304b\u3068\u3044\u3046\u6570\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[5,122],"tags":[],"class_list":["post-476","post","type-post","status-publish","format-standard","hentry","category-r","category-122"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/posts\/476","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/comments?post=476"}],"version-history":[{"count":3,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/posts\/476\/revisions"}],"predecessor-version":[{"id":2774,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/posts\/476\/revisions\/2774"}],"wp:attachment":[{"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/media?parent=476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/categories?post=476"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/tags?post=476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}