Comparative time-series design

{
  "id": "MLC-T-ENV-005861",
  "term": "Comparative time-series design",
  "field": "Environment",
  "term_source": "Comparative Time-Series Design",
  "definition": "The quasi-experimental design known as the comparative time series tracks some outcome of interest for periods before and after program implementation for both the treatment group as well as a non-randomly selected comparison group. Because comparison and treatment groups are not randomly selected, alternate explanations due to prior differences between groups continue to be a threat.",
  "subject": "Policy and guidance",
  "references": [
    "Program Evaluation Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/comparative-time-series-design/"
}