help oaxaca
 . tabulate region, generate(region) nofreq
  . tabulate gender, generate(gender) nofreq
  . tabulate educ_4_cat, generate(educ_4_cat) nofreq
   . tabulate family_status, generate(family_status) nofreq
   . tabulate living_together_with_partner, generate(living_together_with_partner) nofreq
   . tabulate city_size, generate(city_size) nofreq
   . tabulate no_members_houshold, generate(no_members_houshold) nofreq
   . tabulate children_no, generate(children_no) nofreq
   . tabulate emp_position_5cat, generate(emp_position_5cat) nofreq
   . tabulate emp_sector_3cat, generate(emp_sector_3cat) nofreq
  
. oaxaca lnincome no_members_houshold children_no normalize(educ_4_cat1-educ_4_cat4 living_together_with_partner1-living_together_with_partner2 city_size1-city_size4 emp_position_5cat1-emp_position_5cat5 emp_sector_3cat1-emp_sector_3cat3),by (gender) noisily
*************************************************
. oaxaca lnincome no_members_houshold children_no normalize(educ_4_cat1-educ_4_cat4 ),by (gender) noisily
. oaxaca lnincome no_members_houshold children_no normalize(educ_4_cat1-educ_4_cat4 ),by (gender) pooled
. oaxaca, eform
. oaxaca income_nooutliers no_members_houshold children_no normalize(educ_4_cat1-educ_4_cat4 ),by (gender) noisily
. oaxaca income_nooutliers no_members_houshold children_no normalize(educ_4_cat1-educ_4_cat4 ),by (gender) pooled