dummieslab gender xi: reg zile i. male*education if zj199 1 i . male Imale_0-1 (naturally coded; _Imale_0 omitted) i . male*educaten ImalXeduca # (coded as above) Source SS df MS Number of obs 2, 661 F (3, 2657) 79.42 Model | 270764253 3 90254750.9 Prob > F 0.0000 Residual | 3. 0196e+09 2, 657 1136459.53 R-squared 0. 0823 Adj R-squared 0. 0813 Total | 3.29030+09 2, 660 1236968.88 Root MSE 1066 zi16m | Coof. Std. Err. t P>ItI 195% Conf. Interval ] Imale 1 | 164.0434 146.7934 1. 12 0.264 -123. 7975 451 . 8844 education | 208 . 6532 30. 17315 6.92 0.000 149 . 488 267 . 8184 ImalXeduca 1 | 55.17654 39. 21535 1 . 41 0.160 -21 . 71917 132.0722 cons | 32. 78455 112.2913 0.29 0. 770 -187 . 4027 252 . 9718