{"id":4483,"date":"2025-12-24T21:08:39","date_gmt":"2025-12-24T12:08:39","guid":{"rendered":"https:\/\/best-biostatistics.com\/toukei-er\/?p=4483"},"modified":"2025-12-24T21:08:41","modified_gmt":"2025-12-24T12:08:41","slug":"how-to-calculate-time-its-not-always-as-simple-as-it-seems","status":"publish","type":"post","link":"https:\/\/best-biostatistics.com\/toukei-er\/entry\/how-to-calculate-time-its-not-always-as-simple-as-it-seems\/","title":{"rendered":"\u6642\u9593\u306e\u8a08\u7b97\u65b9\u6cd5 \u4e00\u7b4b\u7e04\u3067\u306f\u3044\u304b\u306a\u3044\u6642\u9593\u306e\u8a08\u7b97"},"content":{"rendered":"\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u3042\u308b\u6642\u70b9\u304b\u3089\u3042\u308b\u6642\u70b9\u307e\u3067\u306e\u65e5\u6570\u3084\u6642\u9593\u3092\u8a08\u7b97\u3057\u305f\u3044\u5834\u9762\u306f\u591a\u3044\u3002\u3057\u304b\u3057\u3001\u8a08\u7b97\u306e\u76ee\u7684\u304c\u300c\u65e5\u6570\u300d\u306a\u306e\u304b\u300c\u6642\u9593\u300d\u306a\u306e\u304b\u306b\u3088\u3063\u3066\u3001\u30c7\u30fc\u30bf\u306e\u6e96\u5099\u306e\u4ed5\u65b9\u306f\u7570\u306a\u308b\u3002\u7279\u306b\u6642\u9593\u306f\u300c60\u9032\u6cd5\u300d\u3084\u300c\u65e5\u3092\u307e\u305f\u3050\u51e6\u7406\u300d\u304c\u3042\u308b\u305f\u3081\u3001\u5358\u7d14\u306a\u6570\u5024\u306e\u5f15\u304d\u7b97\u3067\u306f\u5931\u6557\u3057\u3084\u3059\u3044\u3002<\/p>\n\n\n\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001\u521d\u5fc3\u8005\u3067\u3082\u8ff7\u308f\u306a\u3044\u8a08\u7b97\u65b9\u6cd5\u3092\u3001Excel\u3068R\u306e\u305d\u308c\u305e\u308c\u306b\u3064\u3044\u3066\u89e3\u8aac\u3059\u308b\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\">\u30a8\u30af\u30bb\u30eb\u306e\u5834\u5408<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u6e96\u5099\u3059\u308b\u30c7\u30fc\u30bf\uff1a\u30a8\u30af\u30bb\u30eb\u306e\u5834\u5408<\/h3>\n\n\n\n<p>Excel\u3067\u306f\u3001\u76ee\u7684\u306b\u5408\u308f\u305b\u3066\u5165\u529b\u5f62\u5f0f\u3092\u4f7f\u3044\u5206\u3051\u308b\u306e\u304c\u9244\u5247\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u65e5\u6570\u306e\u8a08\u7b97:<\/strong> \u300c2023\/12\/20\u300d\u306e\u3088\u3046\u306a\u3001\u65e5\u4ed8\u306e\u307f\u306e\u30c7\u30fc\u30bf\u3067\u3088\u3044\u3002<\/li>\n\n\n\n<li><strong>\u6642\u9593\u306e\u8a08\u7b97:<\/strong> \u65e5\u3092\u307e\u305f\u3050\u53ef\u80fd\u6027\u304c\u3042\u308b\u5834\u5408\u306f\u3001<span class=\"swl-marker mark_orange\">\u300c\u65e5\u4ed8 + \u534a\u89d2\u30b9\u30da\u30fc\u30b9 + \u6642\u523b\uff0824\u6642\u9593\u5236\uff09\u300d<\/span>\u3092\u540c\u3058\u30bb\u30eb\u306b\u5165\u529b\u3059\u308b\u3002\n<ul class=\"wp-block-list\">\n<li>\u5165\u529b\u4f8b\uff1a<code>2023\/12\/24 22:00<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u65e5\u6570\u306e\u8a08\u7b97\u65b9\u6cd5\uff1a\u30a8\u30af\u30bb\u30eb\u306e\u5834\u5408<\/h3>\n\n\n\n<p>\u5358\u7d14\u306a\u5f15\u304d\u7b97\u3067\u6c42\u3081\u3089\u308c\u308b\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6570\u5f0f:<\/strong> <code>=\u7d42\u4e86\u65e5 - \u958b\u59cb\u65e5<\/code><\/li>\n\n\n\n<li><strong>\u4f8b:<\/strong> <code>2023\/12\/25 - 2023\/12\/20<\/code> \uff1d <code>5<\/code> (\u65e5)<\/li>\n<\/ul>\n\n\n\n<p>\u203b\u7d50\u679c\u304c\u65e5\u4ed8\u5f62\u5f0f\uff081900\/1\/5\u306a\u3069\uff09\u306b\u306a\u3063\u3066\u3057\u307e\u3063\u305f\u5834\u5408\u306f\u3001\u30bb\u30eb\u306e\u66f8\u5f0f\u8a2d\u5b9a\u3092\u300c\u6a19\u6e96\u300d\u306b\u623b\u3059\u5fc5\u8981\u304c\u3042\u308b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6642\u9593\u306e\u8a08\u7b97\u65b9\u6cd5\uff1a\u30a8\u30af\u30bb\u30eb\u306e\u5834\u5408<\/h3>\n\n\n\n<p>\u65e5\u3092\u307e\u305f\u3050\u8a08\u7b97\u3092\u6b63\u3057\u304f\u884c\u3046\u30b3\u30c4\u306f\u3001\u65e5\u4ed8\u3068\u6642\u9593\u309224\u6642\u9593\u5236\u3067\u30bb\u30c3\u30c8\u306b\u3057\u3066\u5165\u529b\u3059\u308b\u3053\u3068\u3067\u3042\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7fcc\u65e5\u306e\u300c01:00\u300d\u306b\u306a\u3063\u3066\u3082\u3001Excel\u306f\u300c\u7fcc\u65e5\u306e1\u6642\u300d\u3068\u3057\u3066\u6b63\u3057\u304f\u8a8d\u8b58\u3057\u3001\u30de\u30a4\u30ca\u30b9\u306e\u8a08\u7b97\u7d50\u679c\u306b\u306a\u308b\u3088\u3046\u306a\u30df\u30b9\u3092\u9632\u3052\u308b\u3002<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u5165\u529b:<\/strong> \u65e5\u4ed8\u3068\u6642\u9593\u309224\u6642\u9593\u5236\u3067\u8a18\u5165\u3059\u308b\uff08\u4f8b\uff1a<code>2023\/12\/24 23:00<\/code> \u3068 <code>2023\/12\/25 02:00<\/code>\uff09\u3002<\/li>\n\n\n\n<li><strong>\u6570\u5f0f:<\/strong> <code>=\u7d42\u4e86\u65e5\u6642 - \u958b\u59cb\u65e5\u6642<\/code><\/li>\n\n\n\n<li><strong>\u66f8\u5f0f\u8a2d\u5b9a:<\/strong> \u5408\u8a08\u6642\u9593\u3092\u6b63\u3057\u304f\u8868\u793a\u3059\u308b\u305f\u3081\u306b\u3001\u30bb\u30eb\u3092\u53f3\u30af\u30ea\u30c3\u30af \uff1e [\u30bb\u30eb\u306e\u66f8\u5f0f\u8a2d\u5b9a] \uff1e [\u30e6\u30fc\u30b6\u30fc\u5b9a\u7fa9] \u3092\u9078\u629e\u3057\u3001\u7a2e\u985e\u6b04\u306b <strong><code>[h]:mm<\/code><\/strong> \u3068\u5165\u529b\u3059\u308b\u3002<\/li>\n<\/ol>\n\n\n\n\n\n\n\n<p>\u901a\u5e38\u306e <code>h:mm<\/code> \u3067\u306f24\u6642\u9593\u3092\u8d85\u3048\u308b\u3068\u8868\u793a\u304c\u300c0\u300d\u306b\u623b\u3063\u3066\u3057\u307e\u3046\u304c\u3001<code>[h]<\/code> \u3068\u30ab\u30c3\u30b3\u3067\u56f2\u3080\u3053\u3068\u3067\u3001\u300c30:15\u300d\u306e\u3088\u3046\u306b24\u6642\u9593\u3092\u8d85\u3048\u305f\u7d2f\u8a08\u6642\u9593\u3092\u6b63\u3057\u304f\u8868\u793a\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">R \u306e\u5834\u5408<\/h2>\n\n\n\n<p>R\u8a00\u8a9e\u3067\u3082\u3001\u65e5\u4ed8\u306e\u307f\u306e\u5834\u5408\u3068\u3001\u65e5\u6642\u3092\u30bb\u30c3\u30c8\u3067\u6271\u3046\u5834\u5408\u3067\u30c7\u30fc\u30bf\u578b\u3092\u4f7f\u3044\u5206\u3051\u308b\u3068\u30b9\u30e0\u30fc\u30ba\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6e96\u5099\u3059\u308b\u30c7\u30fc\u30bf\uff1aR \u306e\u5834\u5408<\/h3>\n\n\n\n<p>\u65e5\u4ed8\u64cd\u4f5c\u306b\u7279\u5316\u3057\u305f <code>lubridate<\/code> \u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u4f7f\u3046\u306e\u304c\u6700\u3082\u78ba\u5b9f\u3067\u3042\u308b\u3002<\/p>\n\n\n\n\n\n\n\n<pre class=\"wp-block-code\"><code>library(lubridate)\n\n# \u65e5\u4ed8\u306e\u307f\u306e\u30c7\u30fc\u30bf\uff08Date\u578b\uff09\nstart_d &lt;- as.Date(\"2023-12-20\")\nend_d   &lt;- as.Date(\"2023-12-25\")\n\n# \u65e5\u4ed8\u3068\u6642\u523b\u304c\u30bb\u30c3\u30c8\u306e\u30c7\u30fc\u30bf\uff08POSIXct\u578b\uff09\nstart_dt &lt;- ymd_hm(\"2023-12-24 22:00\")\nend_dt   &lt;- ymd_hm(\"2023-12-26 10:30\")\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u65e5\u6570\u306e\u8a08\u7b97\u65b9\u6cd5\uff1aR \u306e\u5834\u5408<\/h3>\n\n\n\n<p>\u65e5\u4ed8\u578b\u540c\u58eb\u3092\u5f15\u304d\u7b97\u3059\u308b\u304b\u3001<code>difftime()<\/code> \u95a2\u6570\u3067\u5358\u4f4d\u3092 &#8220;days&#8221; \u306b\u6307\u5b9a\u3059\u308b\u3002<\/p>\n\n\n\n\n\n\n\n<pre class=\"wp-block-code\"><code># \u5358\u7d14\u306a\u5f15\u304d\u7b97\ndiff_days &lt;- end_d - start_d\nprint(diff_days) \n# \u51fa\u529b: Time difference of 5 days\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u6642\u9593\u306e\u8a08\u7b97\u65b9\u6cd5\uff1aR \u306e\u5834\u5408<\/h3>\n\n\n\n<p><code>difftime()<\/code> \u3092\u4f7f\u3044\u3001\u5358\u4f4d\u3092 &#8220;hours&#8221; \u306b\u6307\u5b9a\u3059\u308c\u3070\u3001\u65e5\u3092\u307e\u305f\u3044\u3060\u5408\u8a08\u6642\u9593\u304c\u7b97\u51fa\u3055\u308c\u308b\u3002<\/p>\n\n\n\n\n\n\n\n<pre class=\"wp-block-code\"><code># \u6642\u9593\u306e\u5dee\u3092\u8a08\u7b97\ndiff_hours &lt;- difftime(end_dt, start_dt, units = \"hours\")\nprint(diff_hours)\n# \u51fa\u529b\u4f8b: Time difference of 36.5 hours\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<div id=\"biost-430744502\" 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\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u6642\u9593\u306e\u8a08\u7b97\u3092\u300c\u4e00\u7b4b\u7e04\u300d\u3067\u3044\u304b\u305b\u308b\u305f\u3081\u306e\u9244\u5247\u306f\u3001\u8a08\u7b97\u3057\u305f\u3044\u5185\u5bb9\u306b\u5408\u308f\u305b\u3066\u30c7\u30fc\u30bf\u306e\u6301\u3061\u65b9\u3092\u5909\u3048\u308b\u3053\u3068\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Excel<\/strong>\u3067\u306f\u3001\u65e5\u3092\u307e\u305f\u3050\u6642\u9593\u8a08\u7b97\u306a\u3089\u300c\u65e5\u4ed8\uff0b\u6642\u523b\u300d\u309224\u6642\u9593\u5236\u3067\u30bb\u30c3\u30c8\u5165\u529b\u3057\u3001\u8868\u793a\u5f62\u5f0f <code>[h]<\/code> \u3092\u6d3b\u7528\u3059\u308b\u3002<\/li>\n\n\n\n<li><strong>R<\/strong>\u3067\u306f\u3001<code>as.Date<\/code>\uff08\u65e5\u4ed8\u306e\u307f\uff09\u3068 <code>ymd_hm<\/code>\uff08\u65e5\u6642\u30bb\u30c3\u30c8\uff09\u3092\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u3001<code>difftime()<\/code> \u3067\u5358\u4f4d\u3092\u6307\u5b9a\u3059\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u306e\u57fa\u672c\u3092\u62bc\u3055\u3048\u3066\u304a\u3051\u3070\u3001\u6df1\u591c\u6b8b\u696d\u306e\u96c6\u8a08\u3084\u3001\u6570\u65e5\u9593\u306b\u308f\u305f\u308b\u30ed\u30b0\u89e3\u6790\u3082\u3001\u5358\u7d14\u306a\u5f15\u304d\u7b97\u3067\u6b63\u78ba\u306b\u884c\u3048\u308b\u3088\u3046\u306b\u306a\u308b\u3060\u308d\u3046\u3002<\/p>\n\n\n\n\n\n\n\n<h2 class=\"wp-block-heading\">\u304a\u3059\u3059\u3081\u66f8\u7c4d<\/h2>\n\n\n\n<p><a href=\"https:\/\/amzn.to\/4pYnd5u\">\u8ab0\u3082\u6559\u3048\u3066\u304f\u308c\u306a\u304b\u3063\u305f\u3000\u533b\u7642\u7d71\u8a08\u306e\u4f7f\u3044\u5206\u3051\u301c\u8ff7\u3044\u3084\u3059\u3044\u89e3\u6790\u624b\u6cd5\u306e\u9078\u3073\u65b9\u304c\uff0cR\u3067\u5b9f\u611f\u3057\u306a\u304c\u3089\u308f\u304b\u308b\uff01<\/a><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>\u3042\u308b\u6642\u70b9\u304b\u3089\u3042\u308b\u6642\u70b9\u307e\u3067\u306e\u65e5\u6570\u3084\u6642\u9593\u3092\u8a08\u7b97\u3057\u305f\u3044\u5834\u9762\u306f\u591a\u3044\u3002\u3057\u304b\u3057\u3001\u8a08\u7b97\u306e\u76ee\u7684\u304c\u300c\u65e5\u6570\u300d\u306a\u306e\u304b\u300c\u6642\u9593\u300d\u306a\u306e\u304b\u306b\u3088\u3063\u3066\u3001\u30c7\u30fc\u30bf\u306e\u6e96\u5099\u306e\u4ed5\u65b9\u306f\u7570\u306a\u308b\u3002\u7279\u306b\u6642\u9593\u306f\u300c60\u9032\u6cd5\u300d\u3084\u300c\u65e5\u3092\u307e\u305f\u3050\u51e6\u7406\u300d\u304c\u3042\u308b\u305f\u3081\u3001\u5358\u7d14\u306a\u6570\u5024\u306e\u5f15\u304d\u7b97\u3067 [&hellip;]<\/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":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[17],"tags":[],"class_list":["post-4483","post","type-post","status-publish","format-standard","hentry","category-17"],"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\/4483","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=4483"}],"version-history":[{"count":1,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/posts\/4483\/revisions"}],"predecessor-version":[{"id":4484,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/posts\/4483\/revisions\/4484"}],"wp:attachment":[{"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/media?parent=4483"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/categories?post=4483"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/best-biostatistics.com\/toukei-er\/wp-json\/wp\/v2\/tags?post=4483"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}