From: Impact of minimum wage on gender wage gaps in urban China
 | 1990 vs. 1995 | 1990 vs. 2002 | 1990 vs. 2007 | |||
The initial years: 1990 | Coeff. | SE. | Coeff. | SE. | Coeff. | SE. |
 Male | 0.1327*** | 0.0123 | 0.1552*** | 0.0135 | 0.1404*** | 0.0086 |
 year | 0.0062 | 0.0140 | 0.4767*** | 0.0194 | 0.7921*** | 0.0146 |
 The treatment group | −0.2598*** | 0.0233 | −0.0947*** | 0.0183 | −0.2110*** | 0.0198 |
 Male*year | 0.0319* | 0.0181 | 0.0420* | 0.0253 | 0.1616*** | 0.0185 |
 Male*The treatment group | 0.0649** | 0.0309 | −0.1097*** | 0.0247 | 0.1361*** | 0.0254 |
 year*The treatment | −0.0817** | 0.0385 | −0.0144 | 0.0344 | 0.1712*** | 0.0409 |
 DIDterm | −0.0077 | 0.0503 | 0.0572 | 0.0468 | −0.1125** | 0.0508 |
 | 1991 vs. 1995 | 1991 vs. 2002 | 1991 vs. 2007 | |||
The initial years: 1991 | Coeff. | SE. | Coeff. | SE. | Coeff. | SE. |
 Male | 0.1249*** | 0.0133 | 0.1603*** | 0.0185 | 0.1194*** | 0.0112 |
 year | 0.0207 | 0.0142 | 0.4845*** | 0.0214 | 0.8015*** | 0.0155 |
 The treatment group | −0.2753*** | 0.0230 | −0.1201*** | 0.0223 | −0.1263*** | 0.0206 |
 Male*year | 0.0106 | 0.0191 | 0.0332 | 0.0284 | 0.1800*** | 0.0199 |
 Male*The treatment group | 0.0252 | 0.0312 | −0.1335*** | 0.0313 | 0.1060*** | 0.0306 |
 year*The treatment | −0.0819** | 0.0383 | 0.0107 | 0.0367 | 0.0866** | 0.0412 |
 DIDterm | −0.0568 | 0.0504 | 0.0809 | 0.0506 | −0.0803 + | 0.0536 |
 | 1992 vs. 1995 | 1992 vs. 2002 | 1992 vs. 2007 | |||
The initial years: 1992 | Coeff. | SE. | Coeff. | SE. | Coeff. | SE. |
 Male | 0.1232*** | 0.0133 | 0.1429*** | 0.0187 | 0.1209*** | 0.0110 |
 year | −0.0525*** | 0.0141 | 0.4128*** | 0.0214 | 0.7325*** | 0.0153 |
 The treatment group | −0.2555*** | 0.0217 | −0.1353*** | 0.0229 | −0.1432*** | 0.0210 |
 Male*year | 0.0150 | 0.0191 | 0.0529* | 0.0285 | 0.1809*** | 0.0198 |
 Male*The treatment group | 0.1262*** | 0.0303 | −0.1127*** | 0.0325 | 0.1174*** | 0.0298 |
 year*The treatment | −0.1364*** | 0.0383 | 0.0256 | 0.0370 | 0.1028** | 0.0413 |
 DIDterm | −0.0548 | 0.0496 | 0.0593 | 0.0513 | −0.0922* | 0.0531 |