Supplementary Material 1: Appendix 1: Balanced Panel dataset.
Supplementary Material 2: Appendix 2: Comparative analysis of sample selection (Descriptive summary
Supplementary Material 3: Appendix 3: Complete 54-Country Dataset (Including excluded nations).
Supplementary Material 5: Appendix 5: Descriptive summary statistics.
Supplementary Material 6: Appendix 6: Assessment of stationarity properties for under-five mortality
Supplementary Material 7: Appendix 7: Diagnostics for multicollinearity among determinants of under-