The Relationship Between The 1990 Census and ... - Census Bureau
The Relationship Between The 1990 Census and ... - Census Bureau
The Relationship Between The 1990 Census and ... - Census Bureau
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Industry<br />
1. Small, new, <strong>and</strong> residual categories can be affected the most by definition changes. For example,<br />
the industry category showing the largest percent increase is “Other information services” (873.8<br />
percent). This is a residual category (code 878) in the “Information” sector of the 2000<br />
classification that did not exist as a separate category in <strong>1990</strong>. It includes long-established<br />
industries such as news reporting services, news syndicates, press associations, <strong>and</strong> wire news<br />
services; most of these industries were classified as “Business services” (code 741) in <strong>1990</strong>. Many<br />
relatively new industries, however, are also included in “Other information services,” which may<br />
have dramatically swelled the numbers in this 2000 category when compared to <strong>1990</strong>. <strong>The</strong>se new<br />
industries include internet access providers, online information access services, database<br />
information retrieval systems, <strong>and</strong> other “dot-coms.”<br />
2. <strong>The</strong> industry category with the next largest percent increase is “Management of companies <strong>and</strong><br />
enterprises” (547.1 percent). This category is a br<strong>and</strong> new sector created in the 1997 NAICS. It is<br />
supposed to comprise business establishments that hold the securities of companies for the<br />
purpose of owning a controlling interest, <strong>and</strong> establishments that administer, oversee, <strong>and</strong> manage<br />
their overall company or enterprise. This category did not exist as a separately identified category<br />
or group in the <strong>1990</strong> <strong>Census</strong>. In both the <strong>1990</strong> <strong>Census</strong> <strong>and</strong> in <strong>Census</strong> 2000, respondents tended not<br />
to provide the kind of information needed to distinguish workers in the management establishment<br />
of a larger corporation or enterprise from those that work in the production or service-providing<br />
establishments of the same company. As a result, this sector is probably underreported in both<br />
censuses, <strong>and</strong> the apparently huge increase may be an artifact of this underreporting.<br />
3. Other categories with high percentage increases, each doubling or more from <strong>1990</strong> to 2000, were:<br />
“Other administrative <strong>and</strong> other support services” (208.1 percent); “Computer systems design <strong>and</strong><br />
related services”(199.7 percent); “Home health care services” (136.1 percent); “Professional <strong>and</strong><br />
commercial equipment <strong>and</strong> supplies, wholesale” (120.8 percent); “Radio, TV, <strong>and</strong> computer sales,<br />
retail” (103.5 percent); <strong>and</strong> “Electronic shopping <strong>and</strong> mail order houses, retail” (102.8 percent). 7<br />
4. <strong>The</strong> categories showing the greatest losses, each losing more than 60 percent of its numbers from<br />
<strong>1990</strong> to 2000 were: “Resin, synthetic rubber <strong>and</strong> fibers, <strong>and</strong> filaments manufacturing” (-76.3<br />
percent); “Electric <strong>and</strong> gas <strong>and</strong> other combination utilities” (-67.7 percent); “Metal ore mining”<br />
(-64.2 percent); <strong>and</strong> “Ordnance manufacturing” (-61.1 percent).<br />
Occupation<br />
1. As you might expect, the major occupation group with the largest percent increase from <strong>1990</strong> to<br />
2000 was the one for “Computer specialists,” which more than doubled from <strong>1990</strong> to 2000 (122.2<br />
percent increase). Within this group several detailed categories showed huge increases, some over<br />
1000 percent: “Database administrators” (1773.4 percent increase); “Computer support<br />
specialists” (1174.9 percent); “Network systems <strong>and</strong> data communications analysts” (1022.6<br />
percent); “Network <strong>and</strong> computer systems administrators” (514.8 percent); <strong>and</strong> “Computer<br />
software engineers” (194.5 percent), among others.<br />
7 Increases <strong>and</strong> decreases may not be statistically significantly different from each other.<br />
16