Appendix A: Description of SAS Programs Used to Replicate Ahmed and Robinson's 1980-1990 Emigration Estimates

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Appendix A: Description of SAS Programs Used to Replicate Ahmed and Robinson's 1980-1990 Emigration Estimates

Step #	Description	SAS Programs	Data
Step #	Description	SAS Programs	Input	Output
(*)existing data
*Pre-1980 Selected*
1 Acquire 1980 base population adjusted for cases with unknown country of birth.		FB80CEN	fb80cen.dat *	fb80t.dat * fb80m.dat * fb80f.dat *
2 Create a file containing the foreign-born population enumerated in the 1990 census. Recode the country of birth from 111 categories to 40.		d_fb90_c40	fb111_ad.dat *	d_fb90_c40.dat
3 Calculate the preliminary number of emigrants for the total population that entered before 1980 by age, sex, country of birth, and period of entry.		d_FB_EMIG	d_fb90_c40.dat d_fb80f.dat	d_fbemig_t.dat d_fbemig_m.dat d_fbemig_f.dat
4 Recreate the number of emigrants and the emigration rate for SELECTED countries by age, sex, and race group, and period of entry.		d_Fb_1980_select	d_fbemig_m.dat d_fbemig_f.dat	d_Fb_1980_sel.dat d_Fb_1980_sel_race.dat d_Fb_1980_sel_rate.dat d_Fb_70_79_sel.dat
*1980-1990 Selected*
5 Calculate the proportional distribution of the 1980-1990 entrant foreign born population enumerated in 1990, the average length of stay, the mid-point of age in 1990, and the average age at entry.		d_Fb_8090_midpt	d_fb90_c40.dat	d_Fb_8090_midpt.dat
6 Estimate the 1980-1990 number of emigrants (and rates) for SELECTED countries that entered 1980-1990 by age, sex, and race group.		d_Fb_emig_8090	d_fb90_c40.dat d_Fb_8090_midpt.dat d_Fb_70_79_sel.dat d_SR_1990_15.prn *	d_emig_8090_age.dat d_ERSR_8090_age.dat
*1980-1990 Non-Selected*
7 Create data sets for the 1980-1990 entrants enumerated in 1990 by age, sex, country of birth, and period of entry NON-selected countries.		d_fb_8090_nonsel	d_fb90_c40.dat	d_fb_8090_nonsel.dat
8 Estimate the number of 1980-1990 entrant emigrants for NON-selected countries by age, sex, and race.		d_Fb_emig_8090_nonsel	d_ERSR_8090_age.dat d_Fb_8090_nonsel.dat	d_Fb_emig_8090_nonsel.dat
*Pre-1980 Non-Selected*
9 Create data set that contains the 1980 enumerated foreign born that entered before 1980 for NON-selected countries by age, sex, race, and period of entry.		d_Fb_1980_nonsel.sas	d_fbemig_m.dat d_fbemig_f.dat	d_Fb_1980_nonsel.dat
10 Estimate the number of before 1980 entrant emigrants for NON-selected by age and race.		d_Fb_emig_1980_nonsel	d_Fb_1980_nonsel.dat d_Fb_1980_sel_rate.dat	d_Fb_emig_1980_nonsel.dat
*Final Estimates*
11 Merge four files with the estimated number of emigrants for the before 1980 and 1980-1990 entrants and selected/non-selected countries to estimate the 1980-1990 emigrants by age, sex, and race.		d_Fb_emig_final	d_Fb_1980_sel.dat d_emig_8090_age.dat d_Fb_emig_8090_nonsel.dat d_Fb_emig_1980_nonsel.dat	d_Fb_emig_final.dat d_Fb_emig_94.dat