表 3. The ordered probit regression analysis (partial regression coefficient) of the impact of social interaction on the self-rated health of older adults (n=1179) .

社会交往对老年人自评健康影响的Probit回归分析结果（偏回归系数，n=1179）

Explanatory variable	Model 1	Model 2	Model 3
*P<0.1, **P<0.05, ***P<0.01. Model 1 was used to analyze the impact of four explanatory variables such as the effect of social interaction on self-rated health. In Model 2, the control variables of personal characteristics (gender, age, education) were added to the variables of model 1. Model 3 included the additional variable of psychological capital factors on top of the variables of model 2.LR chi2: Likelihood ratio chi-square.
Active social interaction (β)	0.098***	0.094***	0.075**
Social contact with relatives (β)	0.107***	0.075*	0.059
Social contact with neighbors (β)	−0.052***	−0.019	−0.013
Social contact with friends (β)	0.069***	0.049***	0.046**
Gender (β)		0.133**	0.111*
Age (β)		−0.004	−0.003
Junior middle school (β)		0.338***	0.267***
High school (β)		0.487***	0.374***
Bachelor degree or above (β)		0.651***	0.521***
Psychological capital (β)			0.149***
LR chi2	45.05***	105.62***	161.43***