From: Are migrants in large cities underpaid? Evidence from Vietnam
Variables | X nm | X m | β nm | β m | (X nm − X m)*((β nm + β m)/2) | (β nm − β m)*((X nm + X m)/2) | Contrition of X (%) | Contrition of β (%) |
---|---|---|---|---|---|---|---|---|
Age | 34.823*** | 28.316*** | 0.0763*** | 0.0692*** | 0.4733*** | 0.2220 | 184.67*** | 86.61 |
 | [0.299] | [0.377] | [0.0114] | [0.0111] | [0.0652] | [0.5279] | [32.65] | [209.17] |
Age squared | 1331.64*** | 892.82*** | −0.0010*** | −0.0009*** | −0.4222*** | −0.0387 | −164.73*** | −15.12 |
 | [23.53] | [26.98] | [0.0002] | [0.0002] | [0.0625] | [0.2507] | [30.77] | [98.67] |
Sex (male = 1; female = 0) | 0.5475*** | 0.4907*** | 0.2120*** | 0.2402*** | 0.0128** | −0.0147 | 5.00*** | −5.72 |
 | [0.0136] | [0.0186] | [0.0305] | [0.0291] | [0.0053] | [0.0228] | [2.06] | [9.17] |
Never married (yes = 1) | 0.2944*** | 0.5196*** | −0.1389*** | −0.0376 | 0.0199*** | −0.0412** | 7.75*** | −16.09** |
 | [0.0131] | [0.0187] | [0.0383] | [0.0314] | [0.0061] | [0.0203] | [2.49] | [8.09] |
Urban (urban = 1; rural = 0) | 0.7485*** | 0.7749*** | 0.1032*** | 0.0144 | −0.0016 | 0.0676** | −0.61 | 26.39** |
 | [0.0112] | [0.0147] | [0.0308] | [0.0322] | [0.0013] | [0.0346] | [0.52] | [13.37] |
Hanoi (yes = 1) | 0.3763*** | 0.2537*** | −0.1008*** | −0.0209 | −0.0075** | −0.0252** | −2.91*** | −9.82* |
 | [0.0121] | [0.0135] | [0.0307] | [0.0308] | [0.0028] | [0.0137] | [1.14] | [5.29] |
Primary | 0.0972*** | 0.2106*** | −0.0282 | 0.1741** | −0.0083 | −0.0311* | −3.23 | −12.15* |
 | [0.0082] | [0.0163] | [0.0834] | [0.0818] | [0.0069] | [0.0175] | [2.64] | [6.92] |
Lower secondary | 0.2184*** | 0.3324*** | 0.0664 | 0.2593*** | −0.0186** | −0.0531* | −7.24*** | −20.73* |
 | [0.0121] | [0.0169] | [0.0752] | [0.0786] | [0.0070] | [0.0296] | [2.73] | [11.78] |
Upper secondary | 0.2977*** | 0.2509*** | 0.2791*** | 0.3556*** | 0.0149** | −0.0210 | 5.80** | −8.18 |
 | [0.0124] | [0.0164] | [0.0753] | [0.0806] | [0.0072] | [0.0296] | [2.84] | [11.66] |
Post secondary | 0.3399*** | 0.1163*** | 0.8633*** | 0.8006*** | 0.1860*** | 0.0143 | 72.58*** | 5.58 |
 | [0.0121] | [0.0113] | [0.0786] | [0.0872] | [0.0196] | [0.0261] | [8.12] | [10.31] |
Constant | Â | Â | 6.0938*** | 6.1652*** | Â | Â | Â | Â |
 |  |  | [0.2110] | [0.2110] |  |  |  |  |
Observations | Â | Â | 2008 | 1770 | Â | Â | Â | Â |
R-squared in regression | Â | Â | 0.40 | 0.37 | Â | Â | Â | Â |
Decomposition | Â | Â | Â | Â | Â | Â | Â | Â |
 | ln(Y nm) − ln(Y m) | Contrition of X | Contrition of β | Contrition of α | Contrition of β and α |  |  | |
Absolute | 0.2563*** | 0.2488*** | 0.0789 | −0.0714 | 0.0074 |  |  |  |
 | [0.0258] | [0.0198] | [0.3069] | [0.3132] | [0.0261] |  |  |  |
Percentage | 100*** | 97.10*** | 30.78 | −27.88 | 2.90 |  |  |  |
 | [0] | [10.21] | [121.03] | [123.80] | [10.21] |  |  |  |