A HEAD-AND-FACE ANTHROPOMETRIC SURVEY - The National ...

THE SAMPLE
The original sampling plan called for approximately 4000 subjects, divided more or less
evenly into three age categories, two gender strata, and four racial/ethnic groups:
White, African American, Hispanic and “other” (Asian, Pacific Island, Native American,
mixed race). The use of the term "race" throughout this report reflects common usage,
but does not reflect current anthropological understanding of modern human diversity.
Although the object was to produce a sample that reflected the distribution of these
workers in the U.S. population, we deliberately oversampled racial minorities in order to
ensure adequate variation in racial groups. The plan was to weight the race and age
categories to accurately reflect the total workforce population. This approach allows
re-weighting in the future, should racial proportions in the workforce change. The
original sampling plan is shown in Table 1.
TABLE 1
Targeted Sample Size by Sampling Cell
RACE MALE FEMALE
AGE GROUP
AGE GROUP
18-29 30-44 45-65 TOTAL 18-29 30-44 45-65 TOTAL
White 166 166 166 498 166 166 166 498
African Am 166 166 166 498 166 166 166 498
Hispanic 166 166 166 498 166 166 166 498
Other 166 166 166 498 166 166 166 498
Total 664 664 664 1992 664 664 664 1992
Of the 4026 measured, those under 18 and over 66 were eliminated, leaving 3998 in the
final sample. One subject did not provide age, so the total count in Table 2 is one
subject short of the sample of 3998. The goals in some sampling cells were surpassed,
and in others not quite met. It is important to note that by weighting the final sample,
the summary anthropometric statistics provided later in the report are completely
accurate for the population, even though the sampling goals were not met in a few of
the cells.
TABLE 2
Final Sample by Sampling Cell
MALE
FEMALE
RACE
AGE GROUP
AGE GROUP
18 – 29* 30 - 44 45 – 65 TOTAL 18 – 29* 30 - 44 45 – 65 TOTAL
White 271 611 485 1367 151 194 174 519
African Am 101 255 278 634 51 213 325 589
Hispanic 155 182 75 412 53 36 37 126
Other 24 47 59 130 52 65 103 220
Total 551 1095 897 2543 307 508 639 1454
2