Explanation:
Direct standardization requires stable age-specific rates for the study group; if these are unreliable (e.g., small areas), indirect standardization (using standard rates) is more appropriate.
Consider the following pairs: (1) CBR - Per 1000 population, (2) GFR - Per 1000 women aged 15-49, (3) IMR - Per 1000 live births. Which pair is correctly matched?
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