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Table 4 The impact of the NRCMS on the rural elderly’s nutrition intake based on the PSM-DID model

From: Medical system and nutrition improvement for the rural elderly

Dependent variables Outcome variables Coef SE P value
Energy Before: differ (treated-control) 21.562 66.141 0.744
After: differ (treated-control) 186.918 71.438 0.009
Diff-in-diff 165.356 97.355 0.090
Carbohydrates Before: differ (treated-control) − 1.030 11.245 0.927
After: differ (treated-control) 28.742 13.599 0.035
Diff-in-diff 29.772 17.646 0.092
Fat Before: differ (treated-control) 2.259 2.974 0.448
After: differ (treated-control) 5.796 3.689 0.116
Diff-in-diff 3.537 4.738 0..455
Protein Before: differ (treated-control) − 1.684 2.607 0.518
After: differ (treated-control) 4.468 2.476 0.071
Diff-in-diff 6.151 3.595 0.087
  1. Notes: before means before the implement of the NRCMS, and after means after the implement of the NRCMS