Table 3 The impact of the NRCMS on the rural elderly’s nutrition intake based on a DID model

Energy

dnrcms*dt

206.686

59.483

0.001

(90.029, 323.343)

dnrcms

12.092

46.542

0.795

(− 79.185, 103.368)

dt

− 51.274

34.246

0.135

(− 118.437, 15.889)

Control variables

Yes

–

–

–

R ²

0.281

–

–

–

Carbohydrates

dnrcms*dt

36.379

9.799

0.000

(17.162, 55.596)

dnrcms

− 4.404

7.373

0.550

(− 18.863, 10.055)

dt

− 2.116

5.702

0.711

(− 13.299, 9.067)

Control variables

Yes

–

–

–

R ²

0.302

–

–

–

Fat

dnrcms*dt

4.867

3.315

0.142

(−1.634, 11.367)

dnrcms

1.927

2.440

0.430

(−2.858, 6.711)

dt

− 5.004

2.055

0.015

(− 9.035, − 0.973)

Control variables

Yes

–

–

–

R ²

0.118

–

–

–

Protein

dnrcms*dt

6.979

2.182

0.001

(2.700, 11.258)

dnrcms

− 0.553

1.764

0.754

(− 4.013, 2.907)

dt

− 1.534

1.167

0.189

(− 3.823, 0.756)

Control variables

Yes

–

–

–

R ²

0.203

–

–

–

Obs

1983