How effective is the diaphragm at preventing pregnancy?

<p>The diaphragm is a moderately effective method. For those who use it perfectly, it&rsquo;s around 94% effective. For the typical user (and by typical, we mean the way most end up using it), effectiveness is closer to 84%.</p> <p>In other words:</p> <p>Of those women who use the diaphragm exactly as directed, about 6 in 100 will experience an accidental pregnancy during the first year they use this method.</p> <p>Of those women who do not use the diaphragm exactly as directed, about 12 in 100 will experience an accidental pregnancy during the first year they use this method.</p>