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Table 2 reports summary statistics for all foreign affiliates in our sample and the U.S. parent firms that own them. The average firm in our sample has roughly nine foreign affiliates with total foreign employment of 3,513 workers and total U.S. employment of 7,906 workers.

Table 2.

Summary Statistics.

MeanSDMinMax
Foreign affiliates (342,239 observations)     
Employment 474.30 2,394.8 (confidential) 
ln(Employment) 4.3788 1.9213 (confidential) 
Av. Annual Emp Growth (%0.0909 0.7876 (confidential) 
BTT 0.8099 0.3924 
High RID Indicator 0.5763 0.4941 
ln(GDPus+GDPd) 9.3112 0.2040 8.8665 10.093 
ln(GDPus-GDPd)2 18.184 0.4946 14.841 18.933 
ln(Skill Difference) 1.0984 0.7194 2.494 
ln(Trade Cost) 2.6727 2.3737 4.5940 
BIT 0.0516 0.2212 
FTA 0.1216 0.3269 
Exchange Rate 140.50 819.37 16,105 
Parent-Sibling BTTsa 0.5645 0.2053 
Affiliate-Sibling BTTsb 0.2944 0.3888 
U.S. parent firms (43,233 observations)     
Foreign Affiliate Employment 3,513.2 16,010 (confidential) 
ln(Aff Emp) 5.6966 2.3485 (confidential) 
Av Annual Aff Emp Growth (%0.1090 0.7911 (confidential) 
Parent Firm Employment 7,906.7 28,649 (confidential) 
ln(Parent Emp) 7.2009 2.0656 (confidential) 
Number of Affiliates 8.6924 18.445 (confidential) 
ln(GDPus+GDPd)c 4.5246 3.610 29.618 
ln(GDPus-GDPd)2c 8.8243 7.0513 58.087 
ln(Skill Difference)c 0.4759 0.5094 4.240 
ln(Trade Cost)c 1.4748 1.6564 10.940 
BITc 0.0178 0.0717 
FTAc 0.1538 0.3261 
Exchange Ratec 21.485 217.81 23,573 
MeanSDMinMax
Foreign affiliates (342,239 observations)     
Employment 474.30 2,394.8 (confidential) 
ln(Employment) 4.3788 1.9213 (confidential) 
Av. Annual Emp Growth (%0.0909 0.7876 (confidential) 
BTT 0.8099 0.3924 
High RID Indicator 0.5763 0.4941 
ln(GDPus+GDPd) 9.3112 0.2040 8.8665 10.093 
ln(GDPus-GDPd)2 18.184 0.4946 14.841 18.933 
ln(Skill Difference) 1.0984 0.7194 2.494 
ln(Trade Cost) 2.6727 2.3737 4.5940 
BIT 0.0516 0.2212 
FTA 0.1216 0.3269 
Exchange Rate 140.50 819.37 16,105 
Parent-Sibling BTTsa 0.5645 0.2053 
Affiliate-Sibling BTTsb 0.2944 0.3888 
U.S. parent firms (43,233 observations)     
Foreign Affiliate Employment 3,513.2 16,010 (confidential) 
ln(Aff Emp) 5.6966 2.3485 (confidential) 
Av Annual Aff Emp Growth (%0.1090 0.7911 (confidential) 
Parent Firm Employment 7,906.7 28,649 (confidential) 
ln(Parent Emp) 7.2009 2.0656 (confidential) 
Number of Affiliates 8.6924 18.445 (confidential) 
ln(GDPus+GDPd)c 4.5246 3.610 29.618 
ln(GDPus-GDPd)2c 8.8243 7.0513 58.087 
ln(Skill Difference)c 0.4759 0.5094 4.240 
ln(Trade Cost)c 1.4748 1.6564 10.940 
BITc 0.0178 0.0717 
FTAc 0.1538 0.3261 
Exchange Ratec 21.485 217.81 23,573 

Authors' calculations from BEA Annual Surveys of U.S. Direct Investment Abroad 1987–2007 and various other data sources, described in section II.

aWeighted average share of total sibling employment covered by a BTT with the United States, using fixed affiliate employment shares.

bWeighted average share of total sibling employment covered by a BTT with the affiliate's country, using fixed affiliate employment shares.

cParent-level versions of affiliate country controls are aggregated from the country to the parent firm level using a weighted average, using fixed affiliate employment shares as weights.

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