| lnEARN | Robust Coef Std Err t P>|t| [95% Conf Interval] -+ -EXP | ,053048 ,0043154 12,29 0,000 ,0445869 ,061509 EXP2 | -,0010503 ,000095 -11,05 0,000 -,0012366 -,000864 PRIMA | -,1120727 ,0325364 -3,44 0,001 -,1758659 -,0482795 SECON | -,0374539 ,0312813 -1,20 0,231 -,0987862 ,0238783 HISCH | ,0230256 ,0394534 0,58 0,560 -,0543295 ,1003808 UNIV | ,5804701 ,0518286 11,20 0,000 ,4788513 ,682089 HHOLD | -,4974123 ,0339212 -14,66 0,000 -,5639206 -,4309041 STATE | -,0008539 ,049353 -0,02 0,986 -,0976188 ,095911 PRIVATE | -,1877097 ,0339039 -5,54 0,000 -,2541841 -,1212353 URBAN | ,2068161 ,0244617 8,45 0,000 ,1588548 ,2547775 _cons | 9,693358 ,0478818 202,44 0,000 9,599478 9,787239 Nguồn: tác giả tổng hợp từ liệu VHLSS 2010, (n = 3.368) 48 Khu vực kinh tế dịch vụ Linear regression Number of obs = F( 10, 2944) = 2955 129,24 Prob > F = 0,0000 R-squared = 0,2995 Root MSE = ,62308 -| lnEARN | Robust Coef Std Err t P>|t| [95% Conf Interval] -+ -EXP | ,0619038 ,0038894 15,92 0,000 ,0542775 ,06953 EXP2 | -,0012514 ,0000877 -14,26 0,000 -,0014235 -,0010794 PRIMA | -,3362638 ,049572 -6,78 0,000 -,4334631 -,2390644 SECON | -,3461165 ,0450492 -7,68 0,000 -,4344476 -,2577854 HISCH | -,2791351 ,0454457 -6,14 0,000 -,3682436 -,1900266 UNIV | ,3132841 ,0267303 11,72 0,000 ,260872 ,3656962 HHOLD | -,6343254 ,1023509 -6,20 0,000 -,8350119 -,4336388 STATE | -,4550426 ,0989995 -4,60 0,000 -,6491578 -,2609274 PRIVATE | -,2665284 ,1019603 -2,61 0,009 -,466449 -,0666077 URBAN | ,2331198 ,0239605 9,73 0,000 ,1861388 ,2801008 _cons | 9,983596 ,1052634 94,84 0,000 9,777199 10,18999 Nguồn: tác giả tổng hợp từ liệu VHLSS 2010, (n = 2.955) 49 Khu vực kinh tế nông nghiệp Linear regression Number of obs = F( 9, 964 954) = 28,23 Prob > F = 0,0000 R-squared = 0,1894 Root MSE = ,71403 -| lnEARN | Robust Coef Std Err t P>|t| [95% Conf Interval] -+ -EXP | ,0417176 ,0076058 5,48 0,000 ,0267916 ,0566437 EXP2 | -,0008352 ,0001409 -5,93 0,000 -,0011118 -,0005587 PRIMA | ,0853017 ,0517396 1,65 0,100 -,0162349 ,1868382 SECON | ,0399005 ,0856548 0,47 0,641 -,1281931 ,2079942 HISCH | -,0205173 ,1179563 -0,17 0,862 -,2520012 ,2109665 UNIV | ,2110311 ,2815816 0,75 0,454 -,3415598 ,763622 HHOLD | -,4799375 ,1389883 -3,45 0,001 -,7526955 -,2071795 STATE | ,4783594 ,1566466 3,05 0,002 ,1709478 ,785771 PRIVATE | (omitted) URBAN | ,3582802 ,0746194 4,80 0,000 ,211843 ,5047174 _cons | 9,289293 ,1761399 52,74 0,000 8,943627 9,63496 Nguồn: tác giả tổng hợp từ liệu VHLSS 2010, (n = 964) 50