DOI: 10.5061/dryad.dz08kps64
title: Abortion changes among residents of an abortion rights protective state

description: 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 restrictions on abortion access may stretch across
 jurisdictional boundaries and affect residents’ abortion access even in
 protective states such as Colorado. A likely explanation for this impact
 on Colorado residents is that the increased demand for procedures from
 out-of-state residents resulted in delayed appointments. Potential
 consequences of delayed procedures for in-state residents may include
 increased cost, increased complexity of the procedure with shift to
 surgical abortion versus medication abortion, the emotional toll of
 waiting longer, and the potential for having a pregnancy revealed that
 otherwise would not have been, which may be dangerous for those in abusive
 relationships.  
description: 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. 
description: # 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 information Data was derived from the following sources: * Data request to CDPHE