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, Table 2: t-paired test results Year Model GAMGauId GAMGauLog GAMGamLog Choice

. ***--10, 02*** -16.74*** 2010 GAMGauId -73.06*** -79.93*** GAMGauId GAMGauLog -15.04*** DLM 58.25*** 2.41* -5.34*** 2012 GAMGauId -164.72*** -149.59*** GAMGauId GAMGauLog -16.28*** DLM 70.01*** -23.97*** -49.93*** 2014 GAMGauId -174.34*** -163.31*** GAMGauId GAMGauLog -31.15*** Note

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, Model: DLM GAMGauId GAMGauId GAMGauId GAMGauId GAMGauId Significance test when DLM chosen: H0 : ?1 = 0 and ?2 = 0 205.97***, 2004.

*. Note,

, ?1 and ?2 are estimated values of parameters ?1 and ?2 in DLM models

, and mean significant at 10%, 5%, and 1%, respectively Figure 1: Estimated calorie-income relationships for Vietnam 0 500, 2000.