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<!DOCTYPE html>
<html>
<head>
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-36889698-2"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'UA-36889698-2');
</script>
<link rel="stylesheet" href="http://fonts.googleapis.com/css?family=Roboto:300,400,500,700" type="text/css">
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Prevalence calculator (lab validation data)</title>
</head>
<body>
<div class="container">
<div class="section">
<div class="center-align">
<a href="/covid19testgroup">
<img src="/assets/images/covid/header.png">
</a>
</div>
<h2 class="center-align shift-up" style="margin-top:-5px;">COVID-19 Testing Group</h2>
<div>The COVID-19 Testing Group is a community resource for sharing COVID-19 prevalence, seroprevalence, and burden studies, as well as planning tools and data. This website is maintained by the <a href="https://larremorelab.github.io">Larremore Lab</a> at the University of Colorado, Boulder and the <a href="https://sites.sph.harvard.edu/grad-lab/">Grad Lab</a> at the Harvard T.H. Chan School of Public Health.
</div>
</div>
<div id="app">
<h3 style="margin-top: -5px">Prevalence calculator<br>with lab validation data</h3>
<div id="desc">
<strong>This calculator is one of multiple resources available through the <a href="https://larremorelab.github.io/covid19testgroup">COVID-19 Testing Group</a>.</strong> It accompanies the preprint "<a href="https://www.biorxiv.org/content/10.1101/2020.05.23.112649v1">Jointly modeling prevalence, sensitivity and specificity for optimal sample allocation</a>". This work is not yet peer reviewed.
<h5>Given test results in a population sample, and the test's lab validation data, what is the posterior distribution of prevalence in the population, test sensitivity, and test specificity?</h5>
</div>
<div id="inputs">
<table class="mdl-data-table mdl-js-data-table mdl-shadow--2dp inputtable">
<th>Field test results</th>
<tr class="row">
<th class="mdl-data-table__cell--non-numeric label"># positive tests</th>
<td>
<input class="validate" id="numpos" type="number" step="1" min="0" value="50">
<div class="helper-text" data-error="Must be >=0"></div>
</td>
</tr>
<tr class="row">
<th class="mdl-data-table__cell--non-numeric label"># negative tests</th>
<td>
<input class="validate" id="numneg" type="number" step="1" min="0" value="3280">
<div class="helper-text" data-error="Must be >=0"></div>
</td>
</tr>
</table>
<table class="mdl-data-table mdl-js-data-table mdl-shadow--2dp inputtable">
<th>Test validation results</th>
<tr class="row">
<th class="mdl-data-table__cell--non-numeric label"># true positives</th>
<td>
<input class="validate" id="tp" type="number" step="1" min="0" value="178">
<div class="helper-text" data-error="Must be >=0"></div>
</td>
</tr>
<tr class="row">
<th class="mdl-data-table__cell--non-numeric label"># false negatives</th>
<td>
<input class="validate" id="fn" type="number" step="1" min="0" value="19">
<div class="helper-text" data-error="Must be >=0"></div>
</td>
</tr>
<tr class="row">
<th class="mdl-data-table__cell--non-numeric label"># true negatives</th>
<td>
<input class="validate" id="tn" type="number" step="1" min="0" value="399">
<div class="helper-text" data-error="Must be >=0"></div>
</td>
</tr>
<tr class="row">
<th class="mdl-data-table__cell--non-numeric label"># false positives</th>
<td>
<input class="validate" id="fp" type="number" step="1" min="0" value="2">
<div class="helper-text" data-error="Must be >=0"></div>
</td>
</tr>
</table>
<table class="mdl-data-table mdl-js-data-table mdl-shadow--2dp inputtable">
<!-- <th>MCMC settings</th> -->
<tr class="row">
<th class="mdl-data-table__cell--non-numeric label"># samples plotted</th>
<td>
<input class="validate" id="numsamps" type="number" step="10" min="1000" value="1000">
<div class="helper-text" data-error="Min: 1000"></div>
</td>
</tr>
</table>
<button class="mdl-button mdl-js-button mdl-button--raised mdl-button--colored" id="runsampling">Update Graph</button>
<div id="samplingProgress" class="mdl-progress mdl-js-progress"></div>
</div>
<div id="vizcontainer" class="mdl-shadow--4dp">
<div id="posteriorviz"></div>
<div id="sensviz"></div>
<div id="specviz"></div>
<button class="mdl-button mdl-js-button mdl-button--raised" id="downloadsvg">Download image</button>
</div>
<p>Please report bugs with screenshots to daniel.larremore@colorado.edu. The source code for this visualization is on <a href="https://github.com/samzhang111/seroprevalence-viz">Github</a>.</p>
</div>
<link rel="stylesheet" type="text/css" href="/assets/css/covid/calc2.css">
<link rel="stylesheet" href="https://code.getmdl.io/1.3.0/material.indigo-deep_purple.min.css">
<script defer="defer" src="https://code.getmdl.io/1.3.0/material.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js"></script>
<link rel="stylesheet" href="/assets/css/covid/covid19testgroup.css">
<script src="/assets/js/covid/calc2.8878ed88d320fe297dd1.js"></script></div></body></html>