Demographic Dividend Phase Classifier
Classify the demographic dividend phase from age shares using the stated rule: child dependency above old-age dependency with a total dependency ratio over 70 is pre-dividend, otherwise early-dividend; once old-age dependency meets or exceeds child dependency a ratio of 70 or less is late-dividend and above 70 is post-dividend.
Description
Classify the demographic dividend phase from age shares using the stated rule: child dependency above old-age dependency with a total dependency ratio over 70 is pre-dividend, otherwise early-dividend; once old-age dependency meets or exceeds child dependency a ratio of 70 or less is late-dividend and above 70 is post-dividend.