 status</p>
</dd></dl>
<p>,
</p>
<dl>
<dt><code>inc</code></dt><dd><p>family yearly income in $2500 increments</p>
</dd>
<dt><code>smoke</code></dt><dd><p>does mother smoke? (never, smokes now,
until current pregnancy, once did, not now)</p>
</dd>
<dt><code>time</code></dt><dd><p>time since quitting smoking
(never smoked, still smokes, during current preg, within 1 year,
1 to 2 years ago, 2 to 3 years ago, 3 to 4 years ago,
5 to 9 years ago, 10+ years ago, quit and don't know</p>
</dd>
<dt><code>number</cod