down

The <code>down</code> data frame has 30 rows and 3 columns.
Variable <code>cases</code> means the number of babies with Down syndrome out of total number of births 
<code>births</code> for mothers with mean age <code>age</code>.

datasets

Fitting regression models where, in addition to possible linear terms, one or more covariates have segmented (i.e., broken-line or piece-wise linear) or stepmented (i.e. piece-wise constant) effects. Multiple breakpoints for the same variable are allowed.
The estimation method is discussed in Muggeo (2003, <doi:10.1002/sim.1545>) and
illustrated in Muggeo (2008, <https://www.r-project.org/doc/Rnews/Rnews_2008-1.pdf>). An approach for hypothesis testing is presented
in Muggeo (2016, <doi:10.1080/00949655.2016.1149855>), and interval estimation for the breakpoint is discussed in Muggeo (2017, <doi:10.1111/anzs.12200>).
Segmented mixed models, i.e. random effects in the change point, are discussed in Muggeo (2014, <doi:10.1177/1471082X13504721>).
Estimation of piecewise-constant relationships and changepoints (mean-shift models) is
discussed in Fasola et al. (2018, <doi:10.1007/s00180-017-0740-4>).

Vito MR Muggeo

segmented

Regression Models with Break-Points / Change-Points Estimation
(with Possibly Random Effects)

down function

A data frame with 30 observations on the following 3 variables.<dl>
 <dt><code>age</code></dt>
<dd>the mothers' mean age.</dd> <dt><code>births</code></dt>
<dd>count of total births.</dd> <dt><code>cases</code></dt>
<dd>count of babies with Down syndrome.</dd> 
</dl>

Format

Down syndrome in babies — down

A data frame with 30 observations on the following 3 variables.<dl>
 <dt><code>age</code></dt>
<dd>the mothers' mean age.</dd>

 <dt><code>births</code></dt>
<dd>count of total births.</dd>

 <dt><code>cases</code></dt>
<dd>count of babies with Down syndrome.</dd>

 
</dl>

down: Down syndrome in babies

Description

Usage

Arguments

Format

References

Examples