Variables | Least square method model | First-order difference model | |
---|---|---|---|

M1 | M2 | M3 | |

Explanatory variable | Monthly income of first job | Monthly income of present job | Monthly income difference |

Internal interaction | −.005 | .010 | .012* |

(.004) | (.008) | (.004) | |

Outward interaction | .051*** | .057** | .031** |

(.008) | (.013) | (.007) | |

Seeking job by pulling strings | .234*** | .012 | .053 |

(.041) | (.034) | (.032) | |

Male | −.084** | −.139** | – |

(.023) | (.032) | – | |

Party member | .431*** | .152** | .345*** |

(.049) | (.034) | (.044) | |

Frequency of job changes | – | .018 | .023 |

– | (.009) | (.013) | |

Intercept | .304*** | .874*** | .664*** |

(.050) | (.083) | (.050) | |

R square
| .094 | .092 | .033 |

Sample size | 6263 | 6263 | 6263 |