{"id":7992,"date":"2026-04-09T12:18:45","date_gmt":"2026-04-09T10:18:45","guid":{"rendered":"https:\/\/trigas-trigas-kunden.digitalspital.de\/nicht-kategorisiert\/sample-size-calculation-briefly-explained\/"},"modified":"2026-06-11T15:45:15","modified_gmt":"2026-06-11T13:45:15","slug":"sample-size-calculation","status":"publish","type":"post","link":"https:\/\/trigas-trigas-kunden.digitalspital.de\/en\/cro-wiki\/sample-size-calculation\/","title":{"rendered":"Sample size calculation briefly explained"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"7992\" class=\"elementor elementor-7992 elementor-4794\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1298576 e-flex e-con-boxed e-con e-parent\" data-id=\"1298576\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d913b9a elementor-widget elementor-widget-image\" data-id=\"d913b9a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"370\" src=\"https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Headerbild_Beitrag-Fallzahlberechnung_1920x1080-V2-1024x473.webp\" class=\"attachment-large size-large wp-image-7996\" alt=\"A woman stands next to a seated man at a desk, both looking at a computer monitor. The woman is pointing at the screen, and they appear to be discussing sample size calculation. There is a whiteboard and phone in the background.\" srcset=\"https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Headerbild_Beitrag-Fallzahlberechnung_1920x1080-V2-1024x473.webp 1024w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Headerbild_Beitrag-Fallzahlberechnung_1920x1080-V2-300x138.webp 300w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Headerbild_Beitrag-Fallzahlberechnung_1920x1080-V2-768x354.webp 768w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Headerbild_Beitrag-Fallzahlberechnung_1920x1080-V2-1536x709.webp 1536w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Headerbild_Beitrag-Fallzahlberechnung_1920x1080-V2.webp 1950w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-721b626 elementor-widget elementor-widget-spacer\" data-id=\"721b626\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7b573dc elementor-widget elementor-widget-heading\" data-id=\"7b573dc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">What Is Sample Size Calculation?<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b293165 elementor-widget elementor-widget-text-editor\" data-id=\"b293165\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Sample size calculation determines the <strong>number of subjects required for a clinical study<\/strong> \u2013 a key parameter for sound statistics and reliable results.<\/p><p class=\"p1\"><strong>Too large a sample size drives up costs<\/strong>, resource use, and time; <strong>too small a sample size leads to inaccurate estimates<\/strong> and unmet acceptance criteria. This may require additional recruitment or even the repetition of entire studies, or parts thereof.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-45018c4 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"45018c4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-70045d2 elementor-widget elementor-widget-heading\" data-id=\"70045d2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Key Considerations for Sample Size Calculations<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4ff36bd elementor-widget elementor-widget-text-editor\" data-id=\"4ff36bd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>While excessively large sample sizes unnecessarily drive up the effort and cost of conducting a clinical study, insufficient sample sizes lead to inaccurate estimates and results that lack statistical robustness \u2013 meaning hypotheses cannot be confirmed, or acceptance criteria are not met. In the worst case, studies or parts thereof must be repeated, which is time-consuming and costly.<\/p><p>Where no specific regulatory requirements apply, sample size planning is based on statistical calculations. This requires assumptions about test performance (e.g. sensitivity and specificity) and acceptance criteria, as well as additional parameters drawn from literature or preliminary studies. Conservative assumptions are advisable \u2013 representing the worst-case scenario that still meets acceptance criteria.<\/p><p><strong>TRIGA-S supports sample size calculation for both clinical performance studies (IVDR, <a href=\"https:\/\/trigas-trigas-kunden.digitalspital.de\/en\/cro-wiki\/iso-20916-explained-briefly\/\" target=\"_blank\" rel=\"noopener\">ISO 20916<\/a>) and pharmaceutical clinical trials. <\/strong>Using realistic, conservative assumptions and scenario analyses, we actively reduce the risk of under- or over-planning and ensure efficient use of resources.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b63ae84 elementor-widget elementor-widget-spacer\" data-id=\"b63ae84\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3e6fd7c e-flex e-con-boxed e-con e-parent\" data-id=\"3e6fd7c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-86230f4 e-con-full e-flex e-con e-child\" data-id=\"86230f4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-bcbec2e e-con-full e-flex e-con e-child\" data-id=\"bcbec2e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-da36f7a e-con-full e-flex e-con e-child\" data-id=\"da36f7a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e683fdf elementor-widget elementor-widget-heading\" data-id=\"e683fdf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Need support determining sample sizes for your clinical studies? \nGet in touch.<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-102757a elementor-mobile-align-left elementor-widget elementor-widget-button\" data-id=\"102757a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/trigas-trigas-kunden.digitalspital.de\/en\/contact\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Contact us now<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f6354dc e-con-full e-flex e-con e-child\" data-id=\"f6354dc\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-96f85ca e-con-full e-flex eael_liquid_glass-effect1 e-con e-child\" data-id=\"96f85ca\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8551c61 elementor-widget elementor-widget-heading\" data-id=\"8551c61\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\"><b>Veronika Lay,<\/b> Senior Manager Biostatistics \/ Data Management<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-44bc32fd e-flex e-con-boxed e-con e-parent\" data-id=\"44bc32fd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-25b6343d elementor-widget elementor-widget-heading\" data-id=\"25b6343d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">You Might Also Be Interested In<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-41bb5b86 elementor-widget elementor-widget-spacer\" data-id=\"41bb5b86\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-89042dc elementor-grid-3 elementor-grid-tablet-2 elementor-grid-mobile-1 elementor-widget elementor-widget-loop-grid\" data-id=\"89042dc\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;template_id&quot;:5310,&quot;_skin&quot;:&quot;post&quot;,&quot;columns&quot;:&quot;3&quot;,&quot;columns_tablet&quot;:&quot;2&quot;,&quot;columns_mobile&quot;:&quot;1&quot;,&quot;edit_handle_selector&quot;:&quot;[data-elementor-type=\\&quot;loop-item\\&quot;]&quot;,&quot;row_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;row_gap_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;row_gap_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"loop-grid.post\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-loop-container elementor-grid\" role=\"list\">\n\t\t<style id=\"loop-5310\">.elementor-5310 .elementor-element.elementor-element-945d7a9{--display:flex;--flex-direction:column;--container-widget-width:100%;--container-widget-height:initial;--container-widget-flex-grow:0;--container-widget-align-self:initial;--flex-wrap-mobile:wrap;--border-radius:20px 20px 20px 20px;box-shadow:0px 6px 38px 0px rgba(0, 0, 0, 0.23);--padding-top:0px;--padding-bottom:0px;--padding-left:0px;--padding-right:0px;}.elementor-5310 .elementor-element.elementor-element-945d7a9:not(.elementor-motion-effects-element-type-background), .elementor-5310 .elementor-element.elementor-element-945d7a9 > .elementor-motion-effects-container > .elementor-motion-effects-layer{background-color:var( --e-global-color-e232888 );}.elementor-widget-theme-post-featured-image .widget-image-caption{color:var( --e-global-color-text );font-family:var( --e-global-typography-text-font-family ), Sans-serif;font-size:var( --e-global-typography-text-font-size );font-weight:var( 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--e-global-typography-text-font-size );}.elementor-widget-theme-post-excerpt{font-size:var( --e-global-typography-text-font-size );}}<\/style>\t\t<div data-elementor-type=\"loop-item\" data-elementor-id=\"5310\" class=\"elementor elementor-5310 e-loop-item e-loop-item-7617 post-7617 page type-page status-publish has-post-thumbnail hentry\" data-elementor-post-type=\"elementor_library\" data-custom-edit-handle=\"1\">\n\t\t\t<div class=\"elementor-element elementor-element-945d7a9 e-flex e-con-boxed e-con e-parent\" data-id=\"945d7a9\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6554424 elementor-widget elementor-widget-theme-post-featured-image elementor-widget-image\" data-id=\"6554424\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-featured-image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"480\" src=\"https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/03\/triga-s-Beitragsbild_Auftragsanalytik-und-applikation-1000x600-2-1024x614.webp\" class=\"attachment-large size-large wp-image-7619\" alt=\"A scientist wearing blue gloves and safety glasses examines samples on a slide through a microscope in a laboratory, conducting ivdr performance studies with scientific equipment visible in the background.\" srcset=\"https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/03\/triga-s-Beitragsbild_Auftragsanalytik-und-applikation-1000x600-2-1024x614.webp 1024w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/03\/triga-s-Beitragsbild_Auftragsanalytik-und-applikation-1000x600-2-300x180.webp 300w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/03\/triga-s-Beitragsbild_Auftragsanalytik-und-applikation-1000x600-2-768x461.webp 768w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/03\/triga-s-Beitragsbild_Auftragsanalytik-und-applikation-1000x600-2-1536x922.webp 1536w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/03\/triga-s-Beitragsbild_Auftragsanalytik-und-applikation-1000x600-2.webp 2000w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-37ab487 e-con-full e-flex e-con e-child\" data-id=\"37ab487\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-45cfdc7 elementor-widget elementor-widget-theme-post-excerpt\" data-id=\"45cfdc7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-excerpt.default\">\n\t\t\t\t\tFrom study planning through execution to submission-ready reports: TRIGA-S supports you with specialised expertise, a modular service portfolio, and a dedicated point of contact.\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8e4d8fb elementor-widget elementor-widget-button\" data-id=\"8e4d8fb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/trigas-trigas-kunden.digitalspital.de\/en\/diagnostics\/\" id=\"read-more-button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Merh erfahren<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div data-elementor-type=\"loop-item\" data-elementor-id=\"5310\" class=\"elementor elementor-5310 e-loop-item e-loop-item-9307 post-9307 post type-post status-publish format-standard has-post-thumbnail hentry category-cro-wiki\" data-elementor-post-type=\"elementor_library\" data-custom-edit-handle=\"1\">\n\t\t\t<div class=\"elementor-element elementor-element-945d7a9 e-flex e-con-boxed e-con e-parent\" data-id=\"945d7a9\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6554424 elementor-widget elementor-widget-theme-post-featured-image elementor-widget-image\" data-id=\"6554424\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-featured-image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"480\" src=\"https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Beitragsbild_Beitrag-ISO-1000x600-1-1024x614.webp\" class=\"attachment-large size-large wp-image-9308\" alt=\"A person holding a pen reviews and marks documents spread out on a desk, including papers with text, graphics, a QR code, and references to ISO 20916. The person&apos;s face is not visible.\" srcset=\"https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Beitragsbild_Beitrag-ISO-1000x600-1-1024x614.webp 1024w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Beitragsbild_Beitrag-ISO-1000x600-1-300x180.webp 300w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Beitragsbild_Beitrag-ISO-1000x600-1-768x461.webp 768w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Beitragsbild_Beitrag-ISO-1000x600-1-1536x922.webp 1536w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Beitragsbild_Beitrag-ISO-1000x600-1.webp 2000w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-37ab487 e-con-full e-flex e-con e-child\" data-id=\"37ab487\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-45cfdc7 elementor-widget elementor-widget-theme-post-excerpt\" data-id=\"45cfdc7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-excerpt.default\">\n\t\t\t\t\tWhat does ISO 20916 require for IVD studies? Get an overview of the key requirements this international standard sets out for study organisation. \t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8e4d8fb elementor-widget elementor-widget-button\" data-id=\"8e4d8fb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/trigas-trigas-kunden.digitalspital.de\/en\/cro-wiki\/iso-20916\/\" id=\"read-more-button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Merh erfahren<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div data-elementor-type=\"loop-item\" data-elementor-id=\"5310\" class=\"elementor elementor-5310 e-loop-item e-loop-item-7380 post-7380 page type-page status-publish has-post-thumbnail hentry\" data-elementor-post-type=\"elementor_library\" data-custom-edit-handle=\"1\">\n\t\t\t<div class=\"elementor-element elementor-element-945d7a9 e-flex e-con-boxed e-con e-parent\" data-id=\"945d7a9\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6554424 elementor-widget elementor-widget-theme-post-featured-image elementor-widget-image\" data-id=\"6554424\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-featured-image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"480\" src=\"https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Beitragsbild_pharma-1000x600-1-1024x614.webp\" class=\"attachment-large size-large wp-image-7384\" alt=\"A scientist wearing safety goggles, gloves, and a lab coat stands in a laboratory specializing in pharma services, holding a piece of lab equipment and smiling at the camera. Shelves and lab supplies are visible in the background.\" srcset=\"https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Beitragsbild_pharma-1000x600-1-1024x614.webp 1024w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Beitragsbild_pharma-1000x600-1-300x180.webp 300w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Beitragsbild_pharma-1000x600-1-768x461.webp 768w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Beitragsbild_pharma-1000x600-1-1536x922.webp 1536w, https:\/\/trigas-trigas-kunden.digitalspital.de\/wp-content\/uploads\/2026\/04\/triga-s-Beitragsbild_pharma-1000x600-1.webp 2000w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-37ab487 e-con-full e-flex e-con e-child\" data-id=\"37ab487\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-45cfdc7 elementor-widget elementor-widget-theme-post-excerpt\" data-id=\"45cfdc7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-excerpt.default\">\n\t\t\t\t\tFrom exploratory R&amp;D analytics to submission-ready CDx validation: We support pharmaceutical companies with modular, IVDR-specialised services and dedicated points of contact.\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8e4d8fb elementor-widget elementor-widget-button\" data-id=\"8e4d8fb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/trigas-trigas-kunden.digitalspital.de\/en\/pharma-services\/\" id=\"read-more-button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Merh erfahren<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-dd6cb82 e-flex e-con-boxed e-con e-parent\" data-id=\"dd6cb82\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-31dd286 e-con-full e-flex e-con e-child\" data-id=\"31dd286\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-614c1db elementor-widget__width-initial elementor-widget elementor-widget-n-accordion\" data-id=\"614c1db\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;all_collapsed&quot;,&quot;max_items_expended&quot;:&quot;one&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1020\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1020\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Abbreviations <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><i aria-hidden=\"true\" class=\"fontello fontelloarrow-up-right\"><\/i><\/span>\n\t\t\t<span class='e-closed'><i aria-hidden=\"true\" class=\"fontello fontelloarrow-down-right\"><\/i><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1020\" class=\"elementor-element elementor-element-3c25b4b e-con-full e-flex e-con e-child\" data-id=\"3c25b4b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0904a2c elementor-widget elementor-widget-text-editor\" data-id=\"0904a2c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>IVDR: In Vitro Diagnostic Regulation<\/p><p>ISO: International Organization for Standardization<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>What is sample size calculation? Find out why getting sample size right is crucial for efficient resource allocation and reliable study results.<\/p>\n","protected":false},"author":3,"featured_media":7995,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[25],"tags":[],"class_list":["post-7992","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cro-wiki"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sample Size Calculation: Sample Size in Studies<\/title>\n<meta name=\"description\" content=\"Why the Right Sample Size is Crucial in Clinical Studies: Significance and Conservative Assumptions for Robust Results.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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