Abortion changes among residents of an abortion rights protective state

We sought to study the association of Texas' SB8 and changes to abortion for Colorado residents using data from the Colorado Department of Public Health and Environment Generalized linear Quasi-Poisson regression was used in interrupted time series models, adjusting for time using both a linear term for long term trends and a harmonic term for seasonality, setting the interruption point for each model where significant changes in legal access occurred. The interruption point for the Texas analysis is set at September 2021 plus a 3-month lag-to-effect.

After Texas implemented a 6 week ban, Colorado residents experienced increased demand for procedures in the second trimester and were 83% more likely to have procedures in that trimester when compared to the time period before the change in Texas law. Rate Ratio (RR):1.83, 95% confidence interval (CI): 1.55-2.17. 
This study found changes in in-state resident demand for abortion was associated with Texas SB8.  from restri..., All data was obtained from Colorado Department of Public Health and Environment, induced termination of pregnancy. Data was available as monthly aggregates from 2018-2024, with information on gestational week at the time of termination and state of residence of the patient. Preliminary data cleaning was performed in Excel, statistical analysis in R. 
, , # Impact of Dobbs and Abortion Restrictions in Other States on Residents of an Abortion Rights Protective State

[https://doi.org/10.5061/dryad.dz08kps64](https://doi.org/10.5061/dryad.dz08kps64)

CDPHE aggregated monthly data on induced abortions, with information about state of residence and gestational week of procedure.

Blank cells represent months for which data was not available at the time of collection. 

## Description of the data and file structure

Time series data format where each line of code represents data for one month.

year= year of the observation

month= month of the observation

colorado= total number of abortions for Colorado residents in that month

heartbeat= binary logic operator indicating before or after Texas SB8 law

time= sequential numeric operator for time

cogest12= number of abortions at or before 12 weeks of pregnancy among Colorado residents

cogest1327= number of abortions between 13-27 weeks of pregnancy among Colorado residents

## Sharing/Access...,