
{"id":1786,"date":"2023-02-17T11:06:09","date_gmt":"2023-02-17T11:06:09","guid":{"rendered":"https:\/\/www.editage.com\/insights\/optimizing-research-quality-importance-of-statistical-power-and-how-to-calculate-it-in-biomedical-sciences\/"},"modified":"2025-01-15T06:21:08","modified_gmt":"2025-01-15T06:21:08","slug":"importance-of-statistical-power-in-research-design","status":"publish","type":"post","link":"https:\/\/www.editage.com\/insights\/importance-of-statistical-power-in-research-design","title":{"rendered":"Optimizing research quality: Importance of statistical power and how to calculate it in biomedical sciences"},"content":{"rendered":"<p style=\"margin-bottom:0cm; text-align:justify; margin:0cm 0cm 8pt; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:11pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"line-height:normal\"><span style=\"font-family:Calibri,sans-serif\"><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\">One of the key reasons for poor-quality research in the biomedical sciences is the lack of statistical power.<span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span lang=\"EN-US\" style=\"font-size:11.0pt\" xml:lang=\"EN-US\"><span style=\"line-height:107%\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\"><span style=\"color:#040000\">[1]<\/span><\/span><\/span><\/span><\/span><\/span> Many widely followed reporting guidelines like CONSORT (Consolidated Standards of Reporting Trials)<span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span lang=\"EN-US\" style=\"font-size:11.0pt\" xml:lang=\"EN-US\"><span style=\"line-height:107%\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\"><span style=\"color:#040000\">[2]<\/span><\/span><\/span><\/span><\/span><\/span> require authors to justify sample size. Journals like the\u00a0<\/span><i><span lang=\"EN-US\" style=\"color:black\" xml:lang=\"EN-US\">British Journal of Surgery<\/span><\/i><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><i><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span lang=\"EN-US\" style=\"font-size:11.0pt\" xml:lang=\"EN-US\"><span style=\"line-height:107%\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\"><span style=\"color:#040000\">[3]<\/span><\/span><\/span><\/span><\/span><\/span><\/i><\/span><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\"> and <i>JAMA Neurology<span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span lang=\"EN-US\" style=\"font-size:11.0pt\" xml:lang=\"EN-US\"><span style=\"line-height:107%\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\"><span style=\"color:#040000\">[4]<\/span><\/span><\/span><\/span><\/span><\/span><\/i> require power calculations to be clearly stated in the manuscript. Others, like\u00a0<i>Molecular Genetics and Metabolism,<\/i>\u00a0clearly state that\u00a0<\/span><span style=\"color:black\"><span lang=\"EN-US\" style=\"color:black\" xml:lang=\"EN-US\"><span style=\"text-decoration:none\"><span style=\"text-underline:none\">\u201c[s] ubmitted manuscripts without a power calculation will be rejected and returned to authors<\/span><\/span><\/span><\/span> <span style=\"color:black\"><span lang=\"EN-US\" style=\"color:black\" xml:lang=\"EN-US\"><span style=\"text-decoration:none\"><span style=\"text-underline:none\">without review<\/span><\/span><\/span><\/span><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\">.\u201d<span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span lang=\"EN-US\" style=\"font-size:11.0pt\" xml:lang=\"EN-US\"><span style=\"line-height:107%\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\"><span style=\"color:#040000\">[5]<\/span><\/span><\/span><\/span><\/span><\/span> And it\u2019s not just medical and life science journals that are strict about statistical power\u2014the American Psychological Association also strongly recommends reporting a power analysis in the methods section of psychology papers, in its\u00a0<\/span><span style=\"color:black\"><i><span lang=\"EN-US\" style=\"color:black\" xml:lang=\"EN-US\"><span style=\"text-decoration:none\"><span style=\"text-underline:none\">Reporting Standards for Research in Psychology<\/span><\/span><\/span><\/i><\/span><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><i><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span lang=\"EN-US\" style=\"font-size:11.0pt\" xml:lang=\"EN-US\"><span style=\"line-height:107%\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\"><span style=\"color:#040000\">[6]<\/span><\/span><\/span><\/span><\/span><\/span><\/i><\/span><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\">.<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<h2 style=\"text-align: justify; margin: 0cm 0cm 8pt;\"><span style=\"font-size:11pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"line-height:normal\"><span style=\"font-family:Calibri,sans-serif\"><b><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\">What is statistical power?<\/span><\/b><\/span><\/span><\/span><\/span><\/span><\/h2>\n<p style=\"text-align: justify; margin: 0cm 0cm 8pt;\"><span style=\"font-size:11pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"line-height:normal\"><span style=\"font-family:Calibri,sans-serif\"><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\">In statistics, power refers to the ability of your study to identify effects of substantial interest. Underpowered studies often fail to detect important effects or end up with false-positive results, ultimately leading to inconsistent or misleading data and undermining the reliability of research in general.<span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span lang=\"EN-US\" style=\"font-size:11.0pt\" xml:lang=\"EN-US\"><span style=\"line-height:107%\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\"><span style=\"color:#040000\">[7]<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<h2 style=\"text-align: justify; margin: 0cm 0cm 8pt;\"><span style=\"font-size:11pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"line-height:normal\"><span style=\"font-family:Calibri,sans-serif\"><b><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\">How do I calculate statistical power? <\/span><\/b><\/span><\/span><\/span><\/span><\/span><\/h2>\n<p style=\"text-align: justify; margin: 0cm 0cm 8pt;\"><span style=\"font-size:11pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"line-height:normal\"><span style=\"font-family:Calibri,sans-serif\"><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\">At the time of designing your study, you need to consider four essential factors: <\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify; margin: 0cm 0cm 8pt;\"><span style=\"font-size:11pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"line-height:normal\"><span style=\"font-family:Calibri,sans-serif\"><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\">1. Sample size, i.e., the number of units (e.g., patients), usually represented as \u201cN.\u201d\u00a0<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin-bottom:0cm; text-align:justify; margin:0cm 0cm 8pt; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:11pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"line-height:normal\"><span style=\"font-family:Calibri,sans-serif\"><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\">2. Size of the effect that you are interested in (usually, if you are looking for a large effect, you don\u2019t need as big a sample as you would if you were looking for a small effect)<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin-bottom:0cm; text-align:justify; margin:0cm 0cm 8pt; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:11pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"line-height:normal\"><span style=\"font-family:Calibri,sans-serif\"><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\">3. Alpha level: This is your significance threshold (it can be .001, .05, or .1). If your\u00a0<i>p\u00a0<\/i>values are at or above this level, you say that your result is not statistically significant.<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin-bottom:0cm; text-align:justify; margin:0cm 0cm 8pt; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:11pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"line-height:normal\"><span style=\"font-family:Calibri,sans-serif\"><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\">4. Power: This is a value representing the likelihood of you finding an effect.<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin-bottom:0cm; text-align:justify; margin:0cm 0cm 8pt; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:11pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"line-height:normal\"><span style=\"font-family:Calibri,sans-serif\"><span lang=\"EN-US\" style=\"color:#040000\" xml:lang=\"EN-US\">The above four parameters are interrelated, so if you have the values for three of them, you can calculate the value of the fourth. But usually, the alpha level is fixed (you generally have to choose between .001, .05, and .1) and by reviewing the literature, you will know roughly how large or small your effect can possibly be (effect size). So if you want your study to have good power, you will need to focus on sample size.<\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin-bottom:0cm; text-align:justify; margin:0cm 0cm 8pt; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:12pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span lang=\"EN-US\" style=\"font-size:11.0pt\" xml:lang=\"EN-US\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\"><span style=\"color:#040000\">You\u2019ll notice that there has been no mention of\u00a0<em><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">methodology<\/span><\/em>\u00a0in the above explanation. This is because the power of a study is independent of the methodology. You can conduct the most rigorous tests, such as randomized clinical trials even if your study has low statistical power. But by ignoring statistical power, you may end up wasting time and resources on a study that can\u2019t produce sufficiently reliable and reproducible results since your sample size is too small for you to appropriately detect the effects you have chosen to study.\u00a0 <\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin:0cm; text-align:justify; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:12pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><b><span lang=\"EN-US\" style=\"font-size:11.0pt\" xml:lang=\"EN-US\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\"><span style=\"color:#040000\">When should I calculate power?<\/span><\/span><\/span><\/b><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin: 0cm; text-align: justify;\"><span style=\"font-size:12pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span lang=\"EN-US\" style=\"font-size:11.0pt\" xml:lang=\"EN-US\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\"><span style=\"color:#040000\">Unfortunately, it\u2019s very difficult to fix power\u00a0<em><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">after\u00a0<\/span><\/em>you have completed data collection. It\u2019s therefore important to perform an <i>a priori <\/i>power calculation, to verify whether your study design has sufficient power. Long-term studies may also require interim power calculations so that you can adjust sample sizes accordingly and avoid both premature ending and unnecessary prolongation of the research. At times, you may also need to perform an <i>a posteriori<\/i> power analysis in order to understand the reason for a non-significant result. Power calculations are also valuable additions to your grant proposal, so that the funding agency\u2019s reviewers can gauge the robustness of your study. <\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin: 0cm; text-align: justify;\">\u00a0<\/p>\n<h2 style=\"margin: 0cm; text-align: justify;\"><span style=\"font-size:12pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><b><span lang=\"EN-US\" style=\"font-size:11.0pt\" xml:lang=\"EN-US\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\"><span style=\"color:#040000\">Conclusion<\/span><\/span><\/span><\/b><\/span><\/span><\/span><\/span><\/h2>\n<p style=\"margin: 0cm; text-align: justify;\"><span style=\"font-size:12pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><span lang=\"EN-US\" style=\"font-size:11.0pt\" xml:lang=\"EN-US\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\"><span style=\"color:#040000\">Power analysis is an important tool to maximize your study\u2019s success in answering your research questions. Estimating the correct sample size required is necessary for producing high-quality and robust evidence. <\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin: 0cm; text-align: justify;\">\u00a0<\/p>\n<p style=\"margin:0cm; text-align:justify; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:12pt\"><span style=\"background:white\"><span style=\"text-justify:inter-ideograph\"><span style=\"font-family:&quot;Times New Roman&quot;,serif\"><i><span lang=\"EN-US\" style=\"font-size:11.0pt\" xml:lang=\"EN-US\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\"><span style=\"color:#040000\">Would you like a 1:1 consultation with a biostatistician for assistance with power calculations and other statistical tests? Check out Editage\u2019s <\/span><\/span><\/span><\/i><span style=\"color:black\"><a href=\"https:\/\/www.editage.com\/services\/publishing-services-packs\/statistical-analysis\" style=\"color:blue; text-decoration:underline\"><i><span lang=\"EN-US\" style=\"font-size:11.0pt\" xml:lang=\"EN-US\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">Statistical Analysis &amp; Review Service<\/span><\/span><\/i><\/a><\/span><\/span><\/span><\/span><\/span><\/p>\n<p style=\"margin-bottom:0cm; margin:0cm 0cm 8pt; margin-right:0cm; margin-left:0cm\">\u00a0<\/p>\n<div>\u00a0<\/p>\n<hr align=\"left\" size=\"1\" width=\"33%\" \/>\n<div id=\"edn1\">\n<p class=\"MsoEndnoteText\" style=\"margin:0cm; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:10pt\"><span style=\"font-family:Calibri,sans-serif\"><a href=\"#_ednref1\" style=\"color:blue; text-decoration:underline\" title=\"\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span style=\"font-size:10.0pt\"><span style=\"line-height:107%\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">[1]<\/span><\/span><\/span><\/span><\/span><\/a> <a href=\"https:\/\/royalsocietypublishing.org\/doi\/10.1098\/rsos.160254\" style=\"color:blue; text-decoration:underline\">https:\/\/royalsocietypublishing.org\/doi\/10.1098\/rsos.160254<\/a> <\/span><\/span><\/p>\n<\/div>\n<div id=\"edn2\">\n<p class=\"MsoEndnoteText\" style=\"margin:0cm; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:10pt\"><span style=\"font-family:Calibri,sans-serif\"><a href=\"#_ednref2\" style=\"color:blue; text-decoration:underline\" title=\"\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span style=\"font-size:10.0pt\"><span style=\"line-height:107%\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">[2]<\/span><\/span><\/span><\/span><\/span><\/a> <a href=\"https:\/\/www.equator-network.org\/reporting-guidelines\/consort\/\" style=\"color:blue; text-decoration:underline\">https:\/\/www.equator-network.org\/reporting-guidelines\/consort\/<\/a> <\/span><\/span><\/p>\n<\/div>\n<div id=\"edn3\">\n<p class=\"MsoEndnoteText\" style=\"margin:0cm; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:10pt\"><span style=\"font-family:Calibri,sans-serif\"><a href=\"#_ednref3\" style=\"color:blue; text-decoration:underline\" title=\"\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span style=\"font-size:10.0pt\"><span style=\"line-height:107%\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">[3]<\/span><\/span><\/span><\/span><\/span><\/a> <a href=\"https:\/\/academic.oup.com\/bjs\/pages\/general-instructions\" style=\"color:blue; text-decoration:underline\">https:\/\/academic.oup.com\/bjs\/pages\/general-instructions<\/a> <\/span><\/span><\/p>\n<\/div>\n<div id=\"edn4\">\n<p class=\"MsoEndnoteText\" style=\"margin:0cm; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:10pt\"><span style=\"font-family:Calibri,sans-serif\"><a href=\"#_ednref4\" style=\"color:blue; text-decoration:underline\" title=\"\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span style=\"font-size:10.0pt\"><span style=\"line-height:107%\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">[4]<\/span><\/span><\/span><\/span><\/span><\/a> <a href=\"https:\/\/jamanetwork.com\/journals\/jamaneurology\/pages\/instructions-for-authors\" style=\"color:blue; text-decoration:underline\">https:\/\/jamanetwork.com\/journals\/jamaneurology\/pages\/instructions-for-authors<\/a> <\/span><\/span><\/p>\n<\/div>\n<div id=\"edn5\">\n<p class=\"MsoEndnoteText\" style=\"margin:0cm; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:10pt\"><span style=\"font-family:Calibri,sans-serif\"><a href=\"#_ednref5\" style=\"color:blue; text-decoration:underline\" title=\"\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span style=\"font-size:10.0pt\"><span style=\"line-height:107%\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">[5]<\/span><\/span><\/span><\/span><\/span><\/a> <a href=\"https:\/\/www.elsevier.com\/journals\/molecular-genetics-and-metabolism\/1096-7192\/guide-for-authors\" style=\"color:blue; text-decoration:underline\">https:\/\/www.elsevier.com\/journals\/molecular-genetics-and-metabolism\/1096-7192\/guide-for-authors<\/a> <\/span><\/span><\/p>\n<\/div>\n<div id=\"edn6\">\n<p class=\"MsoEndnoteText\" style=\"margin:0cm; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:10pt\"><span style=\"font-family:Calibri,sans-serif\"><a href=\"#_ednref6\" style=\"color:blue; text-decoration:underline\" title=\"\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span style=\"font-size:10.0pt\"><span style=\"line-height:107%\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">[6]<\/span><\/span><\/span><\/span><\/span><\/a> <a href=\"https:\/\/www.apa.org\/pubs\/authors\/jars.pdf\" style=\"color:blue; text-decoration:underline\">https:\/\/www.apa.org\/pubs\/authors\/jars.pdf<\/a> <\/span><\/span><\/p>\n<\/div>\n<div id=\"edn7\">\n<p class=\"MsoEndnoteText\" style=\"margin:0cm; margin-right:0cm; margin-left:0cm\"><span style=\"font-size:10pt\"><span style=\"font-family:Calibri,sans-serif\"><a href=\"#_ednref7\" style=\"color:blue; text-decoration:underline\" title=\"\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span class=\"MsoEndnoteReference\" style=\"vertical-align:super\"><span style=\"font-size:10.0pt\"><span style=\"line-height:107%\"><span style=\"font-family:&quot;Calibri&quot;,sans-serif\">[7]<\/span><\/span><\/span><\/span><\/span><\/a> <a href=\"https:\/\/web.ma.utexas.edu\/users\/mks\/statmistakes\/UnderOverPower.html\" style=\"color:blue; text-decoration:underline\">https:\/\/web.ma.utexas.edu\/users\/mks\/statmistakes\/UnderOverPower.html<\/a> <\/span><\/span><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>One of the key reasons for poor-quality research in the biomedical sciences is the lack of statistical power.[1] Many widely followed reporting guidelines like CONSORT (Consolidated Standards of Reporting Trials)[2] require authors to justify sample size. Journals like the\u00a0British Journal of Surgery[3] and JAMA Neurology[4] require power calculations to be clearly stated in the manuscript. [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":33313,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[2420],"tags":[1319],"new_categories":[],"new_tags":[],"series":[],"class_list":["post-1786","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-data-analysis","tag-statistical-analysis"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Optimizing research quality: Importance of statistical power and how to calculate it in biomedical sciences | Editage Insights<\/title>\n<meta name=\"description\" content=\"In statistics, \u201cpower\u201d refers to the ability of your study to identify effects of substantial interest. Read on to find out how and when you may calculate statistical power.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.editage.com\/insights\/importance-of-statistical-power-in-research-design\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Optimizing research quality: Importance of statistical power and how to calculate it in biomedical sciences | Editage Insights\" \/>\n<meta property=\"og:description\" content=\"In statistics, \u201cpower\u201d refers to the ability of your study to identify effects of substantial interest. 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