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Table 5 PSM estimation results

From: A study on the impact of Internet use on depression among Chinese older people under the perspective of social participation

Matching method

Treatment group

Control group

ATT

Bootstrap standard error

T value

K-nearest neighbor matching

15.661

17.439

−1.779***

0.446

−3.40

Radius matching

15.666

17.432

−1.766***

0.363

−4.51

K-nearest neighbor matching in caliper

15.666

17.456

−1.790***

0.514

−3.42

Kernel matching

15.661

17.536

−1.875***

0.322

−5.05

Local linear regression matching

15.661

17.519

−1.858***

0.365

−3.55

  1. Note: * p < 0.10, ** p < 0.05, *** p < 0.01; K = 1; standard error after matching is obtained by bootstrap method