ially weighted moving
average calculations. Defaults to -1.5. This exponent should be negative in order to weight growth
measurements closer to the measurement being evaluated more strongly. Exponents that are further from
zero (e.g. -3) will increase the relative influence of measurements close in time to the measurement
being evaluated compared to using the default exponent.</p></dd>


<dt>ref.data.path</dt>
<dd><p>Path to reference data. If not supplied, the year 2000
Centers for Disease Control (CDC) re