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Table 2 Categorisation of outcome measures

From: The effectiveness of continuous quality improvement for developing professional practice and improving health care outcomes: a systematic review

Proportion of outcomes in studies showing comparative benefit from CQI Definition
No outcomes No outcomes demonstrated a statistically significant difference between interventions in any study.
Under half of outcomes Less than half of the outcomes in studies showed a statistically significant benefit from CQI versus its comparator.
Half of outcomes Half of the outcomes in studies showed a statistically significant benefit from CQI versus its comparator.
More than half of outcomes More than half of the outcomes in studies showed a statistically significant benefit from CQI versus its comparator.
All outcomes All outcomes in the studies showed a statistically significant benefit from CQI versus its comparator.