| 变量 | (1) | (2) | (3) | (4) | (5) | 
| 互联网使用 | 0.504*** | 0.374*** | 0.257*** | 0.241*** | 
 | 
| 
 | (15.09) | (9.47) | (6.28) | (5.61) | 
 | 
| 年龄 | 
 | 0.0402*** | 0.0185* | 0.0178* | 0.00639 | 
| 
 | 
 | (4.40) | (1.81) | (1.71) | (0.62) | 
| 年龄平方项 | 
 | −0.000383*** | −0.000168* | −0.000212** | −0.000137 | 
| 
 | 
 | (−4.33) | (−1.65) | (−2.02) | (−1.33) | 
| 性别 | 
 | −0.287*** | −0.273*** | −0.222*** | −0.222*** | 
| 
 | 
 | (−9.37) | (−8.69) | (−6.76) | (−6.80) | 
| 智力水平 | 
 | −0.00306 | −0.0237** | −0.00782 | −0.00502 | 
| 
 | 
 | (−0.27) | (−2.06) | (−0.64) | (−0.41) | 
| 教育年限 | 
 | 0.0569*** | 0.0419*** | 0.0334*** | 0.0370*** | 
| 
 | 
 | (15.17) | (10.72) | (8.27) | (9.27) | 
| 婚姻 | 
 | −0.0904* | −0.156*** | −0.192*** | −0.195*** | 
| 
 | 
 | (−1.87) | (−3.08) | (−3.70) | (−3.75) | 
| 家庭抚养比 | 
 | 
 | 0.0723 | 0.0354 | 0.0420 | 
| 
 | 
 | 
 | (1.10) | (0.53) | (0.63) | 
| 家庭规模 | 
 | 
 | −0.0292*** | −0.0265*** | −0.0280*** | 
| 
 | 
 | 
 | (−3.67) | (−3.22) | (−3.40) | 
| 家庭总资产 | 
 | 
 | 0.247*** | 0.220*** | 0.225*** | 
| 
 | 
 | 
 | (15.23) | (13.20) | (13.53) | 
| 房屋状况 | 
 | 
 | 0.105*** | 0.0554* | 0.0550* | 
| 
 | 
 | 
 | (3.46) | (1.72) | (1.72) | 
| 家庭收入 | 
 | 
 | 0.288*** | 0.284*** | 0.295*** | 
| 
 | 
 | 
 | (11.80) | (11.32) | (11.78) | 
| 东部地区 | 
 | 
 | 
 | 0.759*** | 0.749*** | 
| 
 | 
 | 
 | 
 | (14.05) | (13.91) | 
| 西部地区 | 
 | 
 | 
 | −0.0357 | −0.0408 | 
| 
 | 
 | 
 | 
 | (−0.68) | (−0.78) | 
| 中部地区 | 
 | 
 | 
 | 0.492*** | 0.489*** | 
| 
 | 
 | 
 | 
 | (9.05) | (9.00) | 
| 年份 | 
 | 
 | 
 | 0.0733*** | 0.0933*** | 
| 
 | 
 | 
 | 
 | (4.41) | (5.76) | 
| 常数 | −0.151*** | −1.183*** | −3.974*** | −151.5*** | −191.5*** | 
| 
 | (−9.03) | (−4.93) | (−12.75) | (−4.53) | (−5.86) | 
| 样本量 | 7601 | 7601 | 7601 | 7601 | 7601 |