e></dt><dd><p>number of cigarettes smoked per day for past and
current smokers  (never, 1-4, 5-9, 10-14, 15-19, 20-29, 30-39, 40-60, 60+,
smoke but don't know)</p>
</dd>
</dl>



<h3>Details</h3>

<p>The data were presented by Nolan and Speed to address the question of whether there is a link between maternal smoking and the baby's health for male births.
</p>


<h3>Source</h3>

<p>The book by Nolan and Speed
describes the data in more detail
and provides an Internet site for accessing them:
<a href="https: