{"id":47210,"date":"2026-08-14T14:03:20","date_gmt":"2026-08-14T05:03:20","guid":{"rendered":"https:\/\/www.ripla.co.jp\/blog\/?p=47210"},"modified":"2026-08-31T19:39:15","modified_gmt":"2026-08-31T10:39:15","slug":"instrumental-variable-method","status":"publish","type":"post","link":"https:\/\/www.ripla.co.jp\/blog\/system\/instrumental-variable-method\/","title":{"rendered":"\u64cd\u4f5c\u5909\u6570\u6cd5\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u30fb\u6d3b\u7528\u65b9\u6cd5\u30fb\u6ce8\u610f\u70b9\u3092\u89e3\u8aac"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u64cd\u4f5c\u5909\u6570\u6cd5\u3068\u306f\u3001\u64cd\u4f5c\u5909\u6570\u6cd5\uff08IV\u6cd5\uff09\u306f\u3001\u51e6\u7f6e\u306b\u5f71\u97ff\u3059\u308b\u304c\u7d50\u679c\u3078\u306f\u51e6\u7f6e\u3092\u901a\u3058\u3066\u306e\u307f\u5f71\u97ff\u3057\u3001\u672a\u89b3\u6e2c\u4ea4\u7d61\u3068\u306f\u72ec\u7acb\u306a\u64cd\u4f5c\u5909\u6570\u3092\u4f7f\u3063\u3066\u56e0\u679c\u52b9\u679c\u3092\u8b58\u5225\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002\u5185\u751f\u6027\u3092\u6271\u3048\u308b\u4e00\u65b9\u3001\u95a2\u9023\u6027\u30fb\u6392\u9664\u5236\u7d04\u30fb\u72ec\u7acb\u6027\u306a\u3069\u5f37\u3044\u4eee\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u5b9a\u7fa9\u3060\u3051\u3067\u306a\u304f\u3001\u30c7\u30fc\u30bf\u3092\u6e96\u5099\u3057\u3066\u63a8\u5b9a\u30fb\u8a55\u4fa1\u3057\u3001\u7d50\u679c\u3092\u696d\u52d9\u3067\u4f7f\u3046\u307e\u3067\u306e\u6d41\u308c\u3092\u6574\u7406\u3057\u307e\u3059\u3002\u5206\u6790\u8005\u304c\u300c\u4f7f\u3048\u308b\u304b\u3069\u3046\u304b\u300d\u3092\u5224\u65ad\u3067\u304d\u308b\u3088\u3046\u3001\u524d\u63d0\u3001\u5b9f\u88c5\u3001\u691c\u8a3c\u3001\u9650\u754c\u3092\u5206\u3051\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u64cd\u4f5c\u5909\u6570\u6cd5\u306e\u7d50\u8ad6\u3092\u5148\u306b\u8a00\u3046\u3068\u3001\u6559\u80b2\u5e74\u6570\u3001\u4fa1\u683c\u3001\u533b\u7642\u51e6\u7f6e\u3001\u5236\u5ea6\u5909\u66f4\u306a\u3069\u3001\u51e6\u7f6e\u3068\u7d50\u679c\u306e\u4e21\u65b9\u306b\u5f71\u97ff\u3059\u308b\u672a\u89b3\u6e2c\u8981\u56e0\u304c\u7591\u308f\u308c\u308b\u89b3\u5bdf\u7814\u7a76\u3067\u691c\u8a0e\u3057\u307e\u3059\u3002\u64cd\u4f5c\u5909\u6570\u306e\u7531\u6765\u3092\u5236\u5ea6\u30fb\u5236\u5ea6\u5883\u754c\u30fb\u81ea\u7136\u5b9f\u9a13\u306e\u6587\u8108\u3067\u8aac\u660e\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u624b\u6cd5\u540d\u3092\u9078\u3076\u3060\u3051\u3067\u56e0\u679c\u3084\u4e88\u6e2c\u306e\u59a5\u5f53\u6027\u304c\u4fdd\u8a3c\u3055\u308c\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30c7\u30fc\u30bf\u306e\u767a\u751f\u904e\u7a0b\u3001\u5bfe\u8c61\u671f\u9593\u3001\u6bd4\u8f03\u5bfe\u8c61\u3001\u8a31\u5bb9\u3067\u304d\u308b\u8aa4\u5dee\u3092\u5b9a\u7fa9\u3057\u3066\u304b\u3089\u9069\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"instrumental-variable-method-definition\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u64cd\u4f5c\u5909\u6570\u6cd5\u3068\u306f\uff1f\u307e\u305a\u62bc\u3055\u3048\u308b\u5b9a\u7fa9\u3068\u5f79\u5272<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u64cd\u4f5c\u5909\u6570\u6cd5\uff08IV\u6cd5\uff09\u306f\u3001\u51e6\u7f6e\u306b\u5f71\u97ff\u3059\u308b\u304c\u7d50\u679c\u3078\u306f\u51e6\u7f6e\u3092\u901a\u3058\u3066\u306e\u307f\u5f71\u97ff\u3057\u3001\u672a\u89b3\u6e2c\u4ea4\u7d61\u3068\u306f\u72ec\u7acb\u306a\u64cd\u4f5c\u5909\u6570\u3092\u4f7f\u3063\u3066\u56e0\u679c\u52b9\u679c\u3092\u8b58\u5225\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002\u5185\u751f\u6027\u3092\u6271\u3048\u308b\u4e00\u65b9\u3001\u95a2\u9023\u6027\u30fb\u6392\u9664\u5236\u7d04\u30fb\u72ec\u7acb\u6027\u306a\u3069\u5f37\u3044\u4eee\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u64cd\u4f5c\u5909\u6570\u6cd5\u3092\u8aac\u660e\u3059\u308b\u3068\u304d\u306f\u3001\u5165\u529b\u30c7\u30fc\u30bf\u3001\u63a8\u5b9a\u3059\u308b\u5bfe\u8c61\u3001\u5f97\u3089\u308c\u308b\u51fa\u529b\u3001\u4eee\u5b9a\u306e\u56db\u3064\u3092\u5206\u3051\u307e\u3059\u3002\u5165\u529b\u304c\u540c\u3058\u3067\u3082\u3001\u76ee\u7684\u304c\u4e88\u6e2c\u306a\u306e\u304b\u52b9\u679c\u63a8\u5b9a\u306a\u306e\u304b\u3067\u8a55\u4fa1\u65b9\u6cd5\u306f\u5909\u308f\u308a\u307e\u3059\u3002\u7d50\u679c\u3092\u8aad\u3080\u4eba\u304c\u518d\u73fe\u3067\u304d\u308b\u3088\u3046\u3001\u5358\u4f4d\u3001\u671f\u9593\u3001\u9664\u5916\u6761\u4ef6\u3001\u6b20\u6e2c\u5024\u306e\u6271\u3044\u3092\u8a18\u9332\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u52d9\u3067\u306f\u300c\u624b\u6cd5\u3092\u4f7f\u3063\u305f\u300d\u3068\u3044\u3046\u4e8b\u5b9f\u3088\u308a\u3001\u3069\u306e\u6bd4\u8f03\u3092\u53ef\u80fd\u306b\u3057\u305f\u304b\u304c\u91cd\u8981\u3067\u3059\u3002\u56de\u5e30\u8abf\u6574\u3084\u50be\u5411\u30b9\u30b3\u30a2\u306f\u89b3\u6e2c\u3055\u308c\u305f\u4ea4\u7d61\u3092\u8abf\u6574\u3057\u307e\u3059\u304c\u3001IV\u6cd5\u306f\u672a\u89b3\u6e2c\u4ea4\u7d61\u304c\u3042\u3063\u3066\u3082\u4eee\u5b9a\u304c\u6210\u7acb\u3059\u308c\u3070\u8b58\u5225\u3067\u304d\u307e\u3059\u3002\u4ee3\u308f\u308a\u306b\u52b9\u679c\u3092\u6301\u3064\u64cd\u4f5c\u5909\u6570\u3092\u898b\u3064\u3051\u308b\u96e3\u3057\u3055\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u9055\u3044\u3092\u66d6\u6627\u306b\u3059\u308b\u3068\u3001\u7cbe\u5ea6\u306e\u6570\u5b57\u3092\u56e0\u679c\u52b9\u679c\u3068\u8aa4\u8a8d\u3057\u305f\u308a\u3001\u691c\u5b9a\u7d50\u679c\u3060\u3051\u3067\u65bd\u7b56\u3092\u6c7a\u3081\u305f\u308a\u3059\u308b\u305f\u3081\u3001\u5206\u6790\u8a08\u753b\u306b\u76ee\u7684\u3068\u89e3\u91c8\u7bc4\u56f2\u3092\u660e\u8a18\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"instrumental-variable-method-mechanism\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u64cd\u4f5c\u5909\u6570\u6cd5\u306e\u4ed5\u7d44\u307f\uff5c\u8a08\u7b97\u306e\u6d41\u308c\u3092\u5206\u89e3\u3059\u308b<\/strong><\/h2>\n\n\n\n<h3 id=\"instrumental-variable-method-step1\" class=\"wp-block-heading\"><strong>1. \u30c7\u30fc\u30bf\u3068\u5bfe\u8c61\u3092\u5b9a\u7fa9\u3059\u308b<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u521d\u306b\u3001\u89b3\u6e2c\u5358\u4f4d\u3068\u5206\u6790\u5bfe\u8c61\u671f\u9593\u3092\u56fa\u5b9a\u3057\u307e\u3059\u3002\u7b2c\u4e00\u6bb5\u968e\u3067\u64cd\u4f5c\u5909\u6570\u304b\u3089\u51e6\u7f6e\u3092\u4e88\u6e2c\u3057\u3001\u7b2c\u4e8c\u6bb5\u968e\u3067\u4e88\u6e2c\u3055\u308c\u305f\u51e6\u7f6e\u3068\u7d50\u679c\u306e\u95a2\u4fc2\u3092\u63a8\u5b9a\u3057\u307e\u3059\u3002\u4e8c\u6bb5\u968e\u6700\u5c0f\u4e8c\u4e57\u306f\u4ee3\u8868\u7684\u306a\u5b9f\u88c5\u3067\u3059\u304c\u3001\u6a19\u6e96\u8aa4\u5dee\u306e\u6271\u3044\u3001\u5f31\u3044\u64cd\u4f5c\u5909\u6570\u3001\u7570\u8cea\u306a\u52b9\u679c\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u30c7\u30fc\u30bf\u5206\u5272\u3084\u91cd\u307f\u4ed8\u3051\u3092\u884c\u3046\u5834\u5408\u3082\u3001\u5206\u5272\u524d\u306b\u5168\u4f53\u3092\u898b\u3066\u90fd\u5408\u306e\u3088\u3044\u5bfe\u8c61\u3092\u9078\u3076\u3068\u30d0\u30a4\u30a2\u30b9\u304c\u5165\u308a\u5f97\u307e\u3059\u3002\u51e6\u7406\u3092\u30b3\u30fc\u30c9\u5316\u3057\u3001\u5165\u529b\u4ef6\u6570\u3068\u9664\u5916\u4ef6\u6570\u3092\u30ed\u30b0\u3078\u6b8b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"instrumental-variable-method-step2\" class=\"wp-block-heading\"><strong>2. \u30e2\u30c7\u30eb\u30fb\u63a8\u5b9a\u91cf\u30fb\u30cf\u30a4\u30d1\u30fc\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u6c7a\u3081\u308b<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u64cd\u4f5c\u5909\u6570\u6cd5\u3067\u306f\u3001\u63a8\u5b9a\u5f0f\u3084\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3060\u3051\u3067\u306a\u304f\u3001\u6b63\u5247\u5316\u3001\u521d\u671f\u5024\u3001\u5206\u5e03\u3001\u30ea\u30f3\u30af\u3001\u7a93\u5e45\u3001\u30de\u30c3\u30c1\u57fa\u6e96\u306a\u3069\u306e\u9078\u629e\u304c\u7d50\u679c\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002\u5019\u88dc\u3092\u8907\u6570\u7528\u610f\u3057\u3001\u9078\u629e\u57fa\u6e96\u3092\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u306e\u7d50\u679c\u304b\u3089\u5f8c\u4ed8\u3051\u3057\u306a\u3044\u3088\u3046\u3001\u8a13\u7df4\u30fb\u691c\u8a3c\u30fb\u6700\u7d42\u8a55\u4fa1\u306e\u5f79\u5272\u3092\u5206\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"instrumental-variable-method-step3\" class=\"wp-block-heading\"><strong>3. \u63a8\u5b9a\u7d50\u679c\u3092\u89e3\u91c8\u3067\u304d\u308b\u5f62\u306b\u5909\u63db\u3059\u308b<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u51fa\u529b\u306f\u4fc2\u6570\u3084\u30b9\u30b3\u30a2\u3060\u3051\u3067\u306a\u304f\u3001\u5358\u4f4d\u3092\u623b\u3057\u305f\u4e88\u6e2c\u3001\u533a\u9593\u63a8\u5b9a\u3001\u78ba\u7387\u3001\u52b9\u679c\u91cf\u306a\u3069\u5229\u7528\u8005\u304c\u610f\u601d\u6c7a\u5b9a\u3067\u304d\u308b\u5f62\u306b\u5909\u63db\u3057\u307e\u3059\u3002\u7b2c\u4e00\u6bb5\u968eF\u7d71\u8a08\u91cf\u3001\u5f31IV\u8a3a\u65ad\u3001\u904e\u5270\u8b58\u5225\u691c\u5b9a\u3001\u6a19\u6e96\u8aa4\u5dee\u3001\u611f\u5ea6\u5206\u6790\u3092\u5831\u544a\u3057\u307e\u3059\u3002\u70b9\u63a8\u5b9a\u3060\u3051\u3067\u7d50\u8ad6\u3092\u4f5c\u3089\u305a\u3001\u30c7\u30fc\u30bf\u306e\u5909\u52d5\u3084\u30e2\u30c7\u30eb\u4eee\u5b9a\u3092\u542b\u3080\u4e0d\u78ba\u5b9f\u6027\u3092\u4f75\u8a18\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># \u64cd\u4f5c\u5909\u6570\u6cd5\u306e\u691c\u8a3c\u30d5\u30ed\u30fc\uff08\u6982\u5ff5\u4f8b\uff09\nprepare_data()\nfit_candidate_models()\ncheck_assumptions_and_balance()\nevaluate_on_heldout_data()\nreport_estimate_with_uncertainty()<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u306e\u6d41\u308c\u306f\u6982\u5ff5\u4f8b\u3067\u3059\u3002\u5b9f\u88c5\u3067\u306f\u524d\u51e6\u7406\u3092\u5b66\u7fd2\u30c7\u30fc\u30bf\u306b\u3060\u3051\u9069\u5408\u3055\u305b\u3001\u63a8\u5b9a\u6642\u70b9\u3067\u5229\u7528\u3067\u304d\u306a\u3044\u60c5\u5831\u3092\u7279\u5fb4\u91cf\u306b\u6df7\u305c\u306a\u3044\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u4e71\u6570\u30b7\u30fc\u30c9\u3001\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3001\u30c7\u30fc\u30bf\u306e\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u3001\u8a2d\u5b9a\u5024\u3092\u4fdd\u5b58\u3057\u3001\u540c\u3058\u5165\u529b\u304b\u3089\u540c\u3058\u7d50\u679c\u3092\u518d\u73fe\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"instrumental-variable-method-use\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u64cd\u4f5c\u5909\u6570\u6cd5\u306e\u4f7f\u3044\u65b9\uff5c\u5b9f\u52d9\u3067\u306e\u9069\u7528\u5834\u9762<\/strong><\/h2>\n\n\n\n<h3 id=\"instrumental-variable-method-usecase1\" class=\"wp-block-heading\"><strong>\u4e88\u6e2c\u30fb\u63a8\u5b9a\u3092\u59cb\u3081\u308b\u524d\u306e\u8a2d\u8a08<\/strong><\/h3>\n\n\n\n<p 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id=\"instrumental-variable-method-pitfalls\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u64cd\u4f5c\u5909\u6570\u6cd5\u3067\u8d77\u304d\u3084\u3059\u3044\u5931\u6557\u3068\u5bfe\u7b56<\/strong><\/h2>\n\n\n\n<h3 id=\"instrumental-variable-method-pitfall1\" class=\"wp-block-heading\"><strong>\u30c7\u30fc\u30bf\u306e\u5206\u5272\u30fb\u524d\u51e6\u7406\u3067\u60c5\u5831\u304c\u6f0f\u308c\u308b<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5168\u30c7\u30fc\u30bf\u3067\u6a19\u6e96\u5316\u3084\u88dc\u5b8c\u3092\u3057\u3066\u304b\u3089\u5206\u5272\u3059\u308b\u3001\u672a\u6765\u306e\u5024\u3092\u7279\u5fb4\u91cf\u306b\u4f7f\u3046\u3001\u51e6\u7f6e\u5f8c\u306e\u60c5\u5831\u3092\u8abf\u6574\u5909\u6570\u306b\u3059\u308b\u3001\u3068\u3044\u3063\u305f\u64cd\u4f5c\u306f\u8a55\u4fa1\u3092\u697d\u89b3\u7684\u306b\u3057\u307e\u3059\u3002\u524d\u51e6\u7406\u3092\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u306b\u542b\u3081\u3001\u8a55\u4fa1\u30c7\u30fc\u30bf\u3092\u4e00\u5ea6\u3057\u304b\u4f7f\u308f\u306a\u3044\u8a2d\u8a08\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"instrumental-variable-method-pitfall2\" class=\"wp-block-heading\"><strong>\u6709\u610f\u6027\u30fb\u7cbe\u5ea6\u30fb\u56e0\u679c\u3092\u6df7\u540c\u3059\u308b<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">p\u5024\u304c\u5c0f\u3055\u3044\u3053\u3068\u306f\u52b9\u679c\u304c\u5927\u304d\u3044\u3053\u3068\u3092\u610f\u5473\u305b\u305a\u3001\u691c\u8a3c\u8aa4\u5dee\u304c\u5c0f\u3055\u3044\u3053\u3068\u306f\u4ecb\u5165\u52b9\u679c\u304c\u8b58\u5225\u3067\u304d\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u305b\u3093\u3002\u64cd\u4f5c\u5909\u6570\u6cd5\u306e\u51fa\u529b\u304c\u7b54\u3048\u3066\u3044\u308b\u554f\u3044\u3068\u3001\u610f\u601d\u6c7a\u5b9a\u8005\u304c\u77e5\u308a\u305f\u3044\u554f\u3044\u3092\u4e26\u3079\u3001\u8db3\u308a\u306a\u3044\u4eee\u5b9a\u3084\u30c7\u30fc\u30bf\u3092\u660e\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"instrumental-variable-method-pitfall3\" class=\"wp-block-heading\"><strong>\u904b\u7528\u6761\u4ef6\u306e\u5909\u5316\u3092\u7121\u8996\u3059\u308b<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30fc\u30bf\u306e\u5206\u5e03\u3001\u5236\u5ea6\u3001\u4fa1\u683c\u3001\u5b63\u7bc0\u6027\u3001\u30e6\u30fc\u30b6\u30fc\u69cb\u6210\u306f\u5909\u5316\u3057\u307e\u3059\u3002\u5c0e\u5165\u5f8c\u306f\u5165\u529b\u5206\u5e03\u3001\u6b20\u6e2c\u7387\u3001\u4e88\u6e2c\u8aa4\u5dee\u3001\u6b8b\u5dee\u3001\u4e3b\u8981\u30b0\u30eb\u30fc\u30d7\u306e\u7d50\u679c\u3092\u76e3\u8996\u3057\u3001\u518d\u5b66\u7fd2\u3084\u518d\u63a8\u5b9a\u306e\u6761\u4ef6\u3092\u6c7a\u3081\u307e\u3059\u3002\u76e3\u8996\u5024\u304c\u60aa\u5316\u3057\u305f\u3068\u304d\u306b\u8ab0\u304c\u5224\u65ad\u3057\u3001\u3069\u306e\u7248\u3078\u623b\u3059\u304b\u307e\u3067\u624b\u9806\u5316\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"instrumental-variable-method-decision\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u64cd\u4f5c\u5909\u6570\u6cd5\u3092\u63a1\u7528\u3059\u308b\u5224\u65ad\u57fa\u6e96<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u63a1\u7528\u524d\u306b\u3001\u76ee\u7684\u306b\u5bfe\u3059\u308b\u9069\u5408\u3001\u30c7\u30fc\u30bf\u306e\u91cf\u3068\u54c1\u8cea\u3001\u4eee\u5b9a\u306e\u59a5\u5f53\u6027\u3001\u6bd4\u8f03\u624b\u6cd5\u3068\u306e\u5dee\u3001\u8a08\u7b97\u8cc7\u6e90\u3001\u8aac\u660e\u8cac\u4efb\u3092\u8868\u306b\u3057\u307e\u3059\u3002\u64cd\u4f5c\u5909\u6570\u6cd5\u306f\u4e07\u80fd\u306a\u6539\u5584\u7b56\u3067\u306f\u306a\u3044\u305f\u3081\u3001\u5358\u7d14\u306a\u57fa\u6e96\u624b\u6cd5\u3092\u4e0a\u56de\u3089\u306a\u3044\u5834\u5408\u306f\u63a1\u7528\u3092\u898b\u9001\u308b\u5224\u65ad\u3082\u542b\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u756a\u3067\u306f\u3001\u5165\u529b\u30b9\u30ad\u30fc\u30de\u3001\u63a8\u5b9a\u30fb\u4e88\u6e2c\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3001\u95be\u5024\u3001\u4f8b\u5916\u51e6\u7406\u3001\u30ed\u30b0\u306e\u4fdd\u7ba1\u671f\u9593\u3092\u56fa\u5b9a\u3057\u307e\u3059\u3002\u4eba\u304c\u7d50\u679c\u3092\u78ba\u8a8d\u3059\u308b\u5de5\u7a0b\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u3069\u306e\u60c5\u5831\u3092\u898b\u3066\u5224\u65ad\u3057\u305f\u304b\u3092\u8a18\u9332\u3057\u3001\u5f8c\u304b\u3089\u8a55\u4fa1\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8aac\u660e\u8cc7\u6599\u3067\u306f\u3001\u6570\u5f0f\u306e\u8a73\u7d30\u3060\u3051\u3067\u306a\u304f\u3001\u4f55\u3092\u4eee\u5b9a\u3057\u3001\u4f55\u3092\u4eee\u5b9a\u3057\u3066\u3044\u306a\u3044\u304b\u3092\u793a\u3057\u307e\u3059\u3002\u7570\u306a\u308b\u8a2d\u5b9a\u3067\u306e\u611f\u5ea6\u5206\u6790\u3001\u5931\u6557\u4f8b\u3001\u9069\u7528\u7bc4\u56f2\u5916\u306e\u30b1\u30fc\u30b9\u3092\u793a\u3059\u3068\u3001\u5229\u7528\u8005\u304c\u7d50\u679c\u3092\u904e\u4fe1\u3057\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"instrumental-variable-method-summary\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u64cd\u4f5c\u5909\u6570\u6cd5\u307e\u3068\u3081\uff5c\u76ee\u7684\u3068\u4eee\u5b9a\u3092\u5148\u306b\u6c7a\u3081\u308b<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u64cd\u4f5c\u5909\u6570\u6cd5\u306f\u3001\u64cd\u4f5c\u5909\u6570\u6cd5\uff08IV\u6cd5\uff09\u306f\u3001\u51e6\u7f6e\u306b\u5f71\u97ff\u3059\u308b\u304c\u7d50\u679c\u3078\u306f\u51e6\u7f6e\u3092\u901a\u3058\u3066\u306e\u307f\u5f71\u97ff\u3057\u3001\u672a\u89b3\u6e2c\u4ea4\u7d61\u3068\u306f\u72ec\u7acb\u306a\u64cd\u4f5c\u5909\u6570\u3092\u4f7f\u3063\u3066\u56e0\u679c\u52b9\u679c\u3092\u8b58\u5225\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002\u5185\u751f\u6027\u3092\u6271\u3048\u308b\u4e00\u65b9\u3001\u95a2\u9023\u6027\u30fb\u6392\u9664\u5236\u7d04\u30fb\u72ec\u7acb\u6027\u306a\u3069\u5f37\u3044\u4eee\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u3002\u5b9f\u52d9\u3067\u4fa1\u5024\u3092\u51fa\u3059\u306b\u306f\u3001\u624b\u6cd5\u306e\u540d\u79f0\u3088\u308a\u3082\u3001\u5bfe\u8c61\u3001\u6bd4\u8f03\u3001\u6642\u9593\u3001\u5165\u529b\u3001\u51fa\u529b\u3001\u8a55\u4fa1\u6307\u6a19\u3092\u4e00\u8cab\u3057\u3066\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9032\u3081\u65b9\u306f\u3001\u57fa\u6e96\u3068\u306a\u308b\u5358\u7d14\u306a\u5206\u6790\u3001\u9069\u5207\u306a\u30c7\u30fc\u30bf\u5206\u5272\u3001\u5019\u88dc\u624b\u6cd5\u306e\u63a8\u5b9a\u3001\u4eee\u5b9a\u306e\u8a3a\u65ad\u3001\u72ec\u7acb\u3057\u305f\u8a55\u4fa1\u3001\u611f\u5ea6\u5206\u6790\u3001\u904b\u7528\u76e3\u8996\u306e\u9806\u306b\u3059\u308b\u3068\u518d\u73fe\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002\u7b2c\u4e00\u6bb5\u968e\u304c\u5f31\u3044\u3068\u63a8\u5b9a\u304c\u4e0d\u5b89\u5b9a\u306b\u306a\u308a\u3001\u6392\u9664\u5236\u7d04\u3092\u691c\u8a3c\u30c7\u30fc\u30bf\u3060\u3051\u3067\u8a3c\u660e\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002IV\u304c\u8b58\u5225\u3059\u308b\u306e\u306f\u3057\u3070\u3057\u3070\u64cd\u4f5c\u5909\u6570\u306b\u53cd\u5fdc\u3059\u308b\u5c64\u306e\u5c40\u6240\u5e73\u5747\u51e6\u7f6e\u52b9\u679c\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u7d42\u7684\u306a\u610f\u601d\u6c7a\u5b9a\u3067\u306f\u3001\u7cbe\u5ea6\u3084\u6709\u610f\u6027\u3060\u3051\u3067\u306a\u304f\u3001\u8aa4\u308a\u306e\u30b3\u30b9\u30c8\u3001\u8aac\u660e\u53ef\u80fd\u6027\u3001\u66f4\u65b0\u983b\u5ea6\u3001\u8a08\u7b97\u8cc7\u6e90\u3001\u5f71\u97ff\u3092\u53d7\u3051\u308b\u4eba\u3078\u306e\u516c\u5e73\u6027\u3092\u542b\u3081\u3066\u6bd4\u8f03\u3057\u307e\u3059\u3002\u5c0f\u3055\u304f\u691c\u8a3c\u3057\u3066\u304b\u3089\u9069\u7528\u7bc4\u56f2\u3092\u5e83\u3052\u3001\u60f3\u5b9a\u5916\u306e\u5909\u5316\u3092\u691c\u77e5\u3067\u304d\u308b\u4ed5\u7d44\u307f\u3092\u6b8b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 id=\"instrumental-variable-method-faq\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u3088\u304f\u3042\u308b\u8cea\u554f\uff08FAQ\uff09<\/strong><\/h2>\n\n\n\n<h3 id=\"instrumental-variable-method-faq-1\" class=\"wp-block-heading\"><strong>Q. \u64cd\u4f5c\u5909\u6570\u6cd5\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u64cd\u4f5c\u5909\u6570\u6cd5\uff08IV\u6cd5\uff09\u306f\u3001\u51e6\u7f6e\u306b\u5f71\u97ff\u3059\u308b\u304c\u7d50\u679c\u3078\u306f\u51e6\u7f6e\u3092\u901a\u3058\u3066\u306e\u307f\u5f71\u97ff\u3057\u3001\u672a\u89b3\u6e2c\u4ea4\u7d61\u3068\u306f\u72ec\u7acb\u306a\u64cd\u4f5c\u5909\u6570\u3092\u4f7f\u3063\u3066\u56e0\u679c\u52b9\u679c\u3092\u8b58\u5225\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002\u5185\u751f\u6027\u3092\u6271\u3048\u308b\u4e00\u65b9\u3001\u95a2\u9023\u6027\u30fb\u6392\u9664\u5236\u7d04\u30fb\u72ec\u7acb\u6027\u306a\u3069\u5f37\u3044\u4eee\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h3 id=\"instrumental-variable-method-faq-2\" class=\"wp-block-heading\"><strong>Q. \u64cd\u4f5c\u5909\u6570\u6cd5\u306f\u3069\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u4f7f\u3044\u307e\u3059\u304b\uff1f<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u6559\u80b2\u5e74\u6570\u3001\u4fa1\u683c\u3001\u533b\u7642\u51e6\u7f6e\u3001\u5236\u5ea6\u5909\u66f4\u306a\u3069\u3001\u51e6\u7f6e\u3068\u7d50\u679c\u306e\u4e21\u65b9\u306b\u5f71\u97ff\u3059\u308b\u672a\u89b3\u6e2c\u8981\u56e0\u304c\u7591\u308f\u308c\u308b\u89b3\u5bdf\u7814\u7a76\u3067\u691c\u8a0e\u3057\u307e\u3059\u3002\u64cd\u4f5c\u5909\u6570\u306e\u7531\u6765\u3092\u5236\u5ea6\u30fb\u5236\u5ea6\u5883\u754c\u30fb\u81ea\u7136\u5b9f\u9a13\u306e\u6587\u8108\u3067\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"instrumental-variable-method-faq-3\" class=\"wp-block-heading\"><strong>Q. \u64cd\u4f5c\u5909\u6570\u6cd5\u3092\u4f7f\u3046\u3068\u304d\u306e\u8a55\u4fa1\u6307\u6a19\u306f\u4f55\u3067\u3059\u304b\uff1f<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e00\u6bb5\u968eF\u7d71\u8a08\u91cf\u3001\u5f31IV\u8a3a\u65ad\u3001\u904e\u5270\u8b58\u5225\u691c\u5b9a\u3001\u6a19\u6e96\u8aa4\u5dee\u3001\u611f\u5ea6\u5206\u6790\u3092\u5831\u544a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"instrumental-variable-method-faq-4\" class=\"wp-block-heading\"><strong>Q. \u64cd\u4f5c\u5909\u6570\u6cd5\u3067\u8d77\u304d\u3084\u3059\u3044\u5931\u6557\u306f\u4f55\u3067\u3059\u304b\uff1f<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e00\u6bb5\u968e\u304c\u5f31\u3044\u3068\u63a8\u5b9a\u304c\u4e0d\u5b89\u5b9a\u306b\u306a\u308a\u3001\u6392\u9664\u5236\u7d04\u3092\u691c\u8a3c\u30c7\u30fc\u30bf\u3060\u3051\u3067\u8a3c\u660e\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002IV\u304c\u8b58\u5225\u3059\u308b\u306e\u306f\u3057\u3070\u3057\u3070\u64cd\u4f5c\u5909\u6570\u306b\u53cd\u5fdc\u3059\u308b\u5c64\u306e\u5c40\u6240\u5e73\u5747\u51e6\u7f6e\u52b9\u679c\u3067\u3059\u3002<\/p>\n\n\n\n<h3 id=\"instrumental-variable-method-faq-5\" class=\"wp-block-heading\"><strong>Q. \u64cd\u4f5c\u5909\u6570\u6cd5\u3068\u4f3c\u305f\u624b\u6cd5\u306f\u3069\u3046\u4f7f\u3044\u5206\u3051\u307e\u3059\u304b\uff1f<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u56de\u5e30\u8abf\u6574\u3084\u50be\u5411\u30b9\u30b3\u30a2\u306f\u89b3\u6e2c\u3055\u308c\u305f\u4ea4\u7d61\u3092\u8abf\u6574\u3057\u307e\u3059\u304c\u3001IV\u6cd5\u306f\u672a\u89b3\u6e2c\u4ea4\u7d61\u304c\u3042\u3063\u3066\u3082\u4eee\u5b9a\u304c\u6210\u7acb\u3059\u308c\u3070\u8b58\u5225\u3067\u304d\u307e\u3059\u3002\u4ee3\u308f\u308a\u306b\u52b9\u679c\u3092\u6301\u3064\u64cd\u4f5c\u5909\u6570\u3092\u898b\u3064\u3051\u308b\u96e3\u3057\u3055\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<script 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id=\"instrumental-variable-method-references\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u53c2\u8003\u8cc7\u6599<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u8a18\u4e8b\u306e\u5b9a\u7fa9\u3068\u5b9f\u88c5\u4e0a\u306e\u6ce8\u610f\u306f\u3001\u6b21\u306e\u516c\u5f0f\u8cc7\u6599\u3092\u53c2\u7167\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.statsmodels.org\/stable\/generated\/statsmodels.sandbox.regression.gmm.IV2SLS.html\" target=\"_blank\" rel=\"noopener\">statsmodels IV2SLS<\/a>\u3001<a href=\"https:\/\/rdrr.io\/cran\/AER\/man\/ivreg.html\" target=\"_blank\" rel=\"noopener\">R AER ivreg<\/a>\u3001<a href=\"https:\/\/www.hsph.harvard.edu\/miguel-hernan\/causal-inference-book\/\" target=\"_blank\" rel=\"noopener\">Causal Inference Book IV<\/a>\u3002\u5404\u8cc7\u6599\u306e\u4ed5\u69d8\u30fb\u524d\u63d0\u306f\u66f4\u65b0\u3055\u308c\u308b\u305f\u3081\u3001\u5b9f\u88c5\u6642\u306f\u5229\u7528\u3059\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3082\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>\u64cd\u4f5c\u5909\u6570\u6cd5\u3068\u306f\u3001\u64cd\u4f5c\u5909\u6570\u6cd5\uff08IV\u6cd5\uff09\u306f\u3001\u51e6\u7f6e\u306b\u5f71\u97ff\u3059\u308b\u304c\u7d50\u679c\u3078\u306f\u51e6\u7f6e\u3092\u901a\u3058\u3066\u306e\u307f\u5f71\u97ff\u3057\u3001\u672a\u89b3\u6e2c\u4ea4\u7d61\u3068\u306f\u72ec\u7acb\u306a\u64cd\u4f5c\u5909\u6570\u3092\u4f7f\u3063\u3066\u56e0\u679c\u52b9\u679c\u3092\u8b58\u5225\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002\u5185\u751f\u6027\u3092\u6271\u3048\u308b\u4e00\u65b9\u3001\u95a2\u9023\u6027\u30fb\u6392\u9664\u5236\u7d04\u30fb\u72ec\u7acb\u6027\u306a\u3069\u5f37\u3044\u4eee\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u3002 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