Table 6 Comparison of the NRCMS’ impact on the rural elderly’s nutrition intake across different regions

Energy

dnrcms*dt

77.764

94.923

0.413

(− 108.608, 264.136)

267.383

80.113

0.001

(110.213, 424.553)

dnrcms

36.385

75.518

0.630

(− 111.887, 184.657)

8.944

59.433

0.880

(− 107.655, 125.543)

dt

40.266

68.433

0.556

(− 94.096, 174.628)

− 84.788

40.215

0.035

(− 163.685, − 5.892)

Control var

Yes

–

–

–

Yes

–

–

–

R ²

0.332

–

–

–

0.257

Carbohydrates

dnrcms*dt

25.558

16.412

0.120

(− 6.667, 57.782)

31.029

12.410

0.013

(6.681, 55.376)

dnrcms

− 9.966

12.395

0.442

(− 34.303, 14.372)

5.831

8.998

0.517

(− 11.821, 23.483)

dt

15.847

12.084

0.190

(− 7.879, 39.584)

− 7.468

6.588

0.257

(− 20.392, 5.356)

Control var

Yes

–

–

–

Yes

–

–

–

R ²

0.296

–

–

–

0.326

Fat

dnrcms*dt

0.381

4.985

0.939

(− 9.406, 10.169)

11.635

4.700

0.013

(2.414, 20.856)

dnrcms

7.794

3.791

0.040

(0.351, 15.238)

− 3.239

3.211

0.313

(− 9.539, 3.061)

dt

− 7.029

3.796

0.064

(− 14.482, 0.423)

− 5.140

2.434

0.035

(− 9.915, − 0.365)

Control var

Yes

–

–

–

Yes

–

–

–

R ²

0.200

–

–

–

0.097

Protein

dnrcms*dt

4.609

3.399

0.175

(− 2.064, 11.282)

7.222

2.971

0.015

(1.393, 13.051)

dnrcms

− 1.822

2.829

0.520

(− 7.376, 3.732)

0.456

2.282

0.842

(− 4.021, 4.932)

dt

1.245

2.360

0.598

(− 3.388, 5.878)

− 2.420

1.354

0.074

(− 5.077, 0.237)

Control var

Yes

–

–

–

Yes

–

–

–

R ²

0.239

–

–

–

0.182

–

–

–

Obs

709

1274