Data Dictionary: Census 2000
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Survey: Census 2000
Data Source: U.S. Census Bureau
Table: PCT12E. Sex By Age (NHPI Alone) [209]
Universe: People who are Native Hawaiian and Other Pacific Islander alone
Table Details
PCT12E. Sex By Age (NHPI Alone)
Universe: People who are Native Hawaiian and Other Pacific Islander alone
Variable Label
PCT012E001
PCT012E002
PCT012E003
PCT012E004
PCT012E005
PCT012E006
PCT012E007
PCT012E008
PCT012E009
PCT012E010
PCT012E011
PCT012E012
PCT012E013
PCT012E014
PCT012E015
PCT012E016
PCT012E017
PCT012E018
PCT012E019
PCT012E020
PCT012E021
PCT012E022
PCT012E023
PCT012E024
PCT012E025
PCT012E026
PCT012E027
PCT012E028
PCT012E029
PCT012E030
PCT012E031
PCT012E032
PCT012E033
PCT012E034
PCT012E035
PCT012E036
PCT012E037
PCT012E038
PCT012E039
PCT012E040
PCT012E041
PCT012E042
PCT012E043
PCT012E044
PCT012E045
PCT012E046
PCT012E047
PCT012E048
PCT012E049
PCT012E050
PCT012E051
PCT012E052
PCT012E053
PCT012E054
PCT012E055
PCT012E056
PCT012E057
PCT012E058
PCT012E059
PCT012E060
PCT012E061
PCT012E062
PCT012E063
PCT012E064
PCT012E065
PCT012E066
PCT012E067
PCT012E068
PCT012E069
PCT012E070
PCT012E071
PCT012E072
PCT012E073
PCT012E074
PCT012E075
PCT012E076
PCT012E077
PCT012E078
PCT012E079
PCT012E080
PCT012E081
PCT012E082
PCT012E083
PCT012E084
PCT012E085
PCT012E086
PCT012E087
PCT012E088
PCT012E089
PCT012E090
PCT012E091
PCT012E092
PCT012E093
PCT012E094
PCT012E095
PCT012E096
PCT012E097
PCT012E098
PCT012E099
PCT012E100
PCT012E101
PCT012E102
PCT012E103
PCT012E104
PCT012E105
PCT012E106
PCT012E107
PCT012E108
PCT012E109
PCT012E110
PCT012E111
PCT012E112
PCT012E113
PCT012E114
PCT012E115
PCT012E116
PCT012E117
PCT012E118
PCT012E119
PCT012E120
PCT012E121
PCT012E122
PCT012E123
PCT012E124
PCT012E125
PCT012E126
PCT012E127
PCT012E128
PCT012E129
PCT012E130
PCT012E131
PCT012E132
PCT012E133
PCT012E134
PCT012E135
PCT012E136
PCT012E137
PCT012E138
PCT012E139
PCT012E140
PCT012E141
PCT012E142
PCT012E143
PCT012E144
PCT012E145
PCT012E146
PCT012E147
PCT012E148
PCT012E149
PCT012E150
PCT012E151
PCT012E152
PCT012E153
PCT012E154
PCT012E155
PCT012E156
PCT012E157
PCT012E158
PCT012E159
PCT012E160
PCT012E161
PCT012E162
PCT012E163
PCT012E164
PCT012E165
PCT012E166
PCT012E167
PCT012E168
PCT012E169
PCT012E170
PCT012E171
PCT012E172
PCT012E173
PCT012E174
PCT012E175
PCT012E176
PCT012E177
PCT012E178
PCT012E179
PCT012E180
PCT012E181
PCT012E182
PCT012E183
PCT012E184
PCT012E185
PCT012E186
PCT012E187
PCT012E188
PCT012E189
PCT012E190
PCT012E191
PCT012E192
PCT012E193
PCT012E194
PCT012E195
PCT012E196
PCT012E197
PCT012E198
PCT012E199
PCT012E200
PCT012E201
PCT012E202
PCT012E203
PCT012E204
PCT012E205
PCT012E206
PCT012E207
PCT012E208
PCT012E209
Relevant Documentation:
Excerpt from: Social Explorer, U.S. Census Bureau; 2000 Census of Population and Housing, Summary File 1: Technical Documentation, 2001.
 
Sex
The data on sex were derived from answers to a question that was asked of all people. Individuals were asked to mark either "male" or "female" to indicate their sex. For most cases in which sex was not reported, it was determined by the appropriate entry from the persons given (i.e., first) name and household relationship. Otherwise, sex was imputed according to the relationship to the householder and the age of the person. (For more information on imputation, see "Accuracy of the Data.")

Sex ratio
A measure derived by dividing the total number of males by the total number of females and multiplying by 100.

Comparability
A question on the sex of individuals has been asked of the total population in every census.
For more information on sex, please telephone 301-457-2378.

Excerpt from: Social Explorer, U.S. Census Bureau; 2000 Census of Population and Housing, Summary File 1: Technical Documentation, 2001.
 
Age
The data on age were derived from answers to a question that was asked of all people. The age classification is based on the age of the person in complete years as of April 1, 2000. The age of the person was usually derived from their date of birth information. Their reported age was used only when date of birth information was unavailable.

Data on age are used to determine the applicability of some of the sample questions for a person and to classify other characteristics in census tabulations. Age data are needed to interpret most social and economic characteristics used to plan and examine many programs and policies.

Median age
This measure divides the age distribution into two equal parts: one-half of the cases falling below the median value and one-half above the value. Median age is computed on the basis of a single year of age distribution.

Limitation of the data
The most general limitation for many decades has been the tendency of people to overreport ages or years of birth that end in zero or five. This phenomenon is called "age heaping." In addition, the counts in the 1970 and 1980 censuses for people 100 years old and over were substantially overstated. So also were the counts of people aged 69 in 1970 and aged 79 in 1980. Improvements have been made since then in the questionnaire design, and in the allocation procedures which have further minimized these problems. The count of people aged 89 in the 1990 census was not overstated.

Review of detailed 1990 census information indicated that respondents tended to provide their age as of the date they completed the questionnaire, not their age as of April 1, 1990. One reason this happened was that respondents were not specifically instructed to provide their age as of April 1, 1990. Another reason was that data collection efforts continued well past the census date. In addition, there may have been a tendency for respondents to round their age up if they were close to having a birthday. It is likely that approximately 10 percent of people in most age groups were actually one year younger. For most single years of age, the misstatements were largely offsetting. The problem is most pronounced at age zero because people lost to age one probably were not fully offset by the inclusion of babies born after April 1, 1990. Also, there may have been more rounding up to age one to avoid reporting age as zero years. (Age in complete months was not collected for infants under age one.)

The reporting of age one year older than true age on April 1, 1990, is likely to have been greater in areas where the census data were collected later in calendar year 1990. The magnitude of this problem was much less in the 1960, 1970, and 1980 censuses where age was typically derived from respondent data on year of birth and quarter of birth.

These shortcomings were minimized in Census 2000 because age was usually calculated from exact date of birth and because respondents were specifically asked to provide their age as of April 1, 2000. (For more information on the design of the age question, see the section below that discusses "Comparability.")

Comparability
Age data have been collected in every census. For the first time since 1950, the 1990 data were not available by quarter year of age. This change was made so that coded information could be obtained for both age and year of birth. In 2000, each individual has both an age and an exact date of birth. In each census since 1940, the age of a person was assigned when it was not reported. In censuses before 1940, with the exception of 1880, people of unknown age were shown as a separate category. Since 1960, assignment of unknown age has been performed by a general procedure described as "imputation." The specific procedures for imputing age have been different in each census. (For more information on imputation, see "Accuracy of the Data.")
For more information on age, please telephone 301-457-2428.

Excerpt from: Social Explorer, U.S. Census Bureau; 2000 Census of Population and Housing, Summary File 1: Technical Documentation, 2001.
 
Native Hawaiian or Other Pacific Islander
A person having origins in any of the original peoples of Hawaii, Guam, Samoa, or other Pacific Islands. It includes people who indicate their race as "Native Hawaiian," "Guamanian or Chamorro," "Samoan," and "Other Pacific Islander."

Native Hawaiian
Includes people who indicate their race as "Native Hawaiian" or who identify themselves as "Part Hawaiian" or "Hawaiian."

Guamanian or Chamorro
Includes people who indicate their race as such, including written entries of Chamorro or Guam.

Samoan
Includes people who indicate their race as "Samoan" or who identify themselves as American Samoan or Western Samoan.

Other Pacific Islander
Includes people who provide a write-in response of a Pacific Islander group, such as Carolinian, Chuukese (Trukese), Fijian, Kosraean, Melanesian, Micronesian, Northern Mariana Islander, Palauan, Papua New Guinean, Pohnpeian, Polynesian, Solomon Islander, Tahitian, Tokelauan, Tongan, Yapese, or Pacific Islander, not specified.