Abbreviated Interrupted Time-Series - Institute for Policy Research
Abbreviated Interrupted Time-Series - Institute for Policy Research
Abbreviated Interrupted Time-Series - Institute for Policy Research
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O X O<br />
O O<br />
• Now we add a comparison group that did not<br />
receive treatment and we can<br />
• Assess how the two groups differ at one<br />
pretest<br />
• But only within limits of reliability of test<br />
• Have no idea how groups are changing over<br />
time