Data Dictionary: Census 2000
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Survey: Census 2000
Data Source: U.S. Census Bureau
Table: PCT12D. Sex By Age (Asian Alone) [209]
Universe: People who are Asian alone
Table Details
PCT12D. Sex By Age (Asian Alone)
Universe: People who are Asian alone
Variable Label
PCT012D001
PCT012D002
PCT012D003
PCT012D004
PCT012D005
PCT012D006
PCT012D007
PCT012D008
PCT012D009
PCT012D010
PCT012D011
PCT012D012
PCT012D013
PCT012D014
PCT012D015
PCT012D016
PCT012D017
PCT012D018
PCT012D019
PCT012D020
PCT012D021
PCT012D022
PCT012D023
PCT012D024
PCT012D025
PCT012D026
PCT012D027
PCT012D028
PCT012D029
PCT012D030
PCT012D031
PCT012D032
PCT012D033
PCT012D034
PCT012D035
PCT012D036
PCT012D037
PCT012D038
PCT012D039
PCT012D040
PCT012D041
PCT012D042
PCT012D043
PCT012D044
PCT012D045
PCT012D046
PCT012D047
PCT012D048
PCT012D049
PCT012D050
PCT012D051
PCT012D052
PCT012D053
PCT012D054
PCT012D055
PCT012D056
PCT012D057
PCT012D058
PCT012D059
PCT012D060
PCT012D061
PCT012D062
PCT012D063
PCT012D064
PCT012D065
PCT012D066
PCT012D067
PCT012D068
PCT012D069
PCT012D070
PCT012D071
PCT012D072
PCT012D073
PCT012D074
PCT012D075
PCT012D076
PCT012D077
PCT012D078
PCT012D079
PCT012D080
PCT012D081
PCT012D082
PCT012D083
PCT012D084
PCT012D085
PCT012D086
PCT012D087
PCT012D088
PCT012D089
PCT012D090
PCT012D091
PCT012D092
PCT012D093
PCT012D094
PCT012D095
PCT012D096
PCT012D097
PCT012D098
PCT012D099
PCT012D100
PCT012D101
PCT012D102
PCT012D103
PCT012D104
PCT012D105
PCT012D106
PCT012D107
PCT012D108
PCT012D109
PCT012D110
PCT012D111
PCT012D112
PCT012D113
PCT012D114
PCT012D115
PCT012D116
PCT012D117
PCT012D118
PCT012D119
PCT012D120
PCT012D121
PCT012D122
PCT012D123
PCT012D124
PCT012D125
PCT012D126
PCT012D127
PCT012D128
PCT012D129
PCT012D130
PCT012D131
PCT012D132
PCT012D133
PCT012D134
PCT012D135
PCT012D136
PCT012D137
PCT012D138
PCT012D139
PCT012D140
PCT012D141
PCT012D142
PCT012D143
PCT012D144
PCT012D145
PCT012D146
PCT012D147
PCT012D148
PCT012D149
PCT012D150
PCT012D151
PCT012D152
PCT012D153
PCT012D154
PCT012D155
PCT012D156
PCT012D157
PCT012D158
PCT012D159
PCT012D160
PCT012D161
PCT012D162
PCT012D163
PCT012D164
PCT012D165
PCT012D166
PCT012D167
PCT012D168
PCT012D169
PCT012D170
PCT012D171
PCT012D172
PCT012D173
PCT012D174
PCT012D175
PCT012D176
PCT012D177
PCT012D178
PCT012D179
PCT012D180
PCT012D181
PCT012D182
PCT012D183
PCT012D184
PCT012D185
PCT012D186
PCT012D187
PCT012D188
PCT012D189
PCT012D190
PCT012D191
PCT012D192
PCT012D193
PCT012D194
PCT012D195
PCT012D196
PCT012D197
PCT012D198
PCT012D199
PCT012D200
PCT012D201
PCT012D202
PCT012D203
PCT012D204
PCT012D205
PCT012D206
PCT012D207
PCT012D208
PCT012D209
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.
 
Asian
A person having origins in any of the original peoples of the Far East, Southeast Asia, or the Indian subcontinent including, for example, Cambodia, China, India, Japan, Korea, Malaysia, Pakistan, the Philippine Islands, Thailand, and Vietnam. It includes "Asian Indian," "Chinese," "Filipino," "Korean," "Japanese," "Vietnamese," and "Other Asian."

Asian Indian
Includes people who indicated their race as "Asian Indian" or identified themselves as Bengalese, Bharat, Dravidian, East Indian, or Goanese.

Chinese
Includes people who indicate their race as "Chinese" or who identify themselves as Cantonese, or Chinese American. In some census tabulations, written entries of Taiwanese are included with Chinese while in others they are shown separately.

Filipino
Includes people who indicate their race as "Filipino" or who report entries such as Philipino, Philipine, or Filipino American.

Japanese
Includes people who indicate their race as "Japanese" or who report entries such as Nipponese or Japanese American.

Korean
Includes people who indicate their race as "Korean" or who provide a response of Korean American.

Vietnamese
Includes people who indicate their race as "Vietnamese" or who provide a response of Vietnamese American.

Cambodian
Includes people who provide a response such as Cambodian or Cambodia.

Hmong
Includes people who provide a response such as Hmong, Laohmong, or Mong.

Laotian
Includes people who provide a response such as Laotian, Laos, or Lao.

Includes people who provide a response such as Thai, Thailand, or Siamese.

Other Asian
Includes people who provide a response of Bangladeshi; Bhutanese; Burmese; Indochinese; Indonesian; Iwo Jiman; Madagascar; Malaysian; Maldivian; Nepalese; Okinawan; Pakistani; Singaporean; Sri Lankan; or Other Asian, specified and Other Asian, not specified.