Data Dictionary: Census 2000
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Survey: Census 2000
Data Source: U.S. Census Bureau
Table: PCT12L. Sex By Age (Asian Alone, Not Hispanic Or Latino) [209]
Universe: People who are Asian alone, not Hispanic or Latino
Table Details
PCT12L. Sex By Age (Asian Alone, Not Hispanic Or Latino)
Universe: People who are Asian alone, not Hispanic or Latino
Variable Label
PCT012L001
PCT012L002
PCT012L003
PCT012L004
PCT012L005
PCT012L006
PCT012L007
PCT012L008
PCT012L009
PCT012L010
PCT012L011
PCT012L012
PCT012L013
PCT012L014
PCT012L015
PCT012L016
PCT012L017
PCT012L018
PCT012L019
PCT012L020
PCT012L021
PCT012L022
PCT012L023
PCT012L024
PCT012L025
PCT012L026
PCT012L027
PCT012L028
PCT012L029
PCT012L030
PCT012L031
PCT012L032
PCT012L033
PCT012L034
PCT012L035
PCT012L036
PCT012L037
PCT012L038
PCT012L039
PCT012L040
PCT012L041
PCT012L042
PCT012L043
PCT012L044
PCT012L045
PCT012L046
PCT012L047
PCT012L048
PCT012L049
PCT012L050
PCT012L051
PCT012L052
PCT012L053
PCT012L054
PCT012L055
PCT012L056
PCT012L057
PCT012L058
PCT012L059
PCT012L060
PCT012L061
PCT012L062
PCT012L063
PCT012L064
PCT012L065
PCT012L066
PCT012L067
PCT012L068
PCT012L069
PCT012L070
PCT012L071
PCT012L072
PCT012L073
PCT012L074
PCT012L075
PCT012L076
PCT012L077
PCT012L078
PCT012L079
PCT012L080
PCT012L081
PCT012L082
PCT012L083
PCT012L084
PCT012L085
PCT012L086
PCT012L087
PCT012L088
PCT012L089
PCT012L090
PCT012L091
PCT012L092
PCT012L093
PCT012L094
PCT012L095
PCT012L096
PCT012L097
PCT012L098
PCT012L099
PCT012L100
PCT012L101
PCT012L102
PCT012L103
PCT012L104
PCT012L105
PCT012L106
PCT012L107
PCT012L108
PCT012L109
PCT012L110
PCT012L111
PCT012L112
PCT012L113
PCT012L114
PCT012L115
PCT012L116
PCT012L117
PCT012L118
PCT012L119
PCT012L120
PCT012L121
PCT012L122
PCT012L123
PCT012L124
PCT012L125
PCT012L126
PCT012L127
PCT012L128
PCT012L129
PCT012L130
PCT012L131
PCT012L132
PCT012L133
PCT012L134
PCT012L135
PCT012L136
PCT012L137
PCT012L138
PCT012L139
PCT012L140
PCT012L141
PCT012L142
PCT012L143
PCT012L144
PCT012L145
PCT012L146
PCT012L147
PCT012L148
PCT012L149
PCT012L150
PCT012L151
PCT012L152
PCT012L153
PCT012L154
PCT012L155
PCT012L156
PCT012L157
PCT012L158
PCT012L159
PCT012L160
PCT012L161
PCT012L162
PCT012L163
PCT012L164
PCT012L165
PCT012L166
PCT012L167
PCT012L168
PCT012L169
PCT012L170
PCT012L171
PCT012L172
PCT012L173
PCT012L174
PCT012L175
PCT012L176
PCT012L177
PCT012L178
PCT012L179
PCT012L180
PCT012L181
PCT012L182
PCT012L183
PCT012L184
PCT012L185
PCT012L186
PCT012L187
PCT012L188
PCT012L189
PCT012L190
PCT012L191
PCT012L192
PCT012L193
PCT012L194
PCT012L195
PCT012L196
PCT012L197
PCT012L198
PCT012L199
PCT012L200
PCT012L201
PCT012L202
PCT012L203
PCT012L204
PCT012L205
PCT012L206
PCT012L207
PCT012L208
PCT012L209
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.

Excerpt from: Social Explorer, U.S. Census Bureau; 2000 Census of Population and Housing, Summary File 1: Technical Documentation, 2001.
 
Hispanic or Latino
The data on the Hispanic or Latino population were derived from answers to a question that was asked of all people. The terms "Spanish,""Hispanic origin," and "Latino" are used interchangeably. Some respondents identify with all three terms while others may identify with only one of these three specific terms. Hispanics or Latinos who identify with the terms "Spanish,"" Hispanic," or "Latino" are those who classify themselves in one of the specific Spanish, Hispanic, or Latino categories listed on the questionnaire ("Mexican,""Puerto Rican," or "Cuban") as well as those who indicate that they are "other Spanish/Hispanic/Latino." People who do not identify with one of the specific origins listed on the questionnaire but indicate that they are "other Spanish, Hispanic, or Latino" are those whose origins are from Spain, the Spanish-speaking countries of Central or South America, the Dominican Republic, or people identifying themselves generally as Spanish, Spanish-American, Hispanic, Hispano, Latino, and so on. All write-in responses to the "other Spanish/Hispanic/Latino" category were coded.

Origin can be viewed as the heritage, nationality group, lineage, or country of birth of the person or the persons parents or ancestors before their arrival in the United States. People who identify their origin as Spanish, Hispanic, or Latino may be of any race. Some tabulations are shown by the origin of the householder. In all cases where the origin of households, families, or occupied housing units is classified as Spanish, Hispanic, or Latino, the origin of the householder is used. (See the discussion of householder under "Household Type and Relationship.")

If an individual could not provide a Hispanic origin response, their origin was assigned using specific rules of precedence of household relationship. For example, if origin was missing for a natural-born daughter in the household, then either the origin of the householder, another naturalborn child, or spouse of the householder was assigned. If Hispanic origin was not reported for anyone in the household, the Hispanic origin of a householder in a previously processed household with the same race was assigned. This procedure is a variation of the general imputation procedures described in "Accuracy of the Data" and is similar to those used in 1990, except for Census 2000 race and Spanish surnames were used to assist in assigning an origin (see the "Comparability" section below also).

Comparability
There are two important changes to the Hispanic origin question for Census 2000. First, the sequence of the race and Hispanic origin questions for Census 2000 differs from that in 1990; in 1990, the race question preceded the Hispanic origin question. Testing prior to Census 2000 indicated that response to the Hispanic origin question could be improved by placing it before the race question without affecting the response to the race question. Second, there is an instruction preceding the Hispanic origin question indicating that respondents should answer both the Hispanic origin and the race questions. This instruction was added to give emphasis to the distinct concepts of the Hispanic origin and race questions, and to emphasize the need for both pieces of information.

Furthermore, there has been a change in the processing of the Hispanic origin and race responses. In the 1990 census, respondents provided Hispanic origin responses in the race question and race responses in the Hispanic origin question. In 1990, the Hispanic origin question and the race question had separate edits; therefore, although information may have been present on the questionnaire, it was not fully utilized due to the discrete nature of the edits. However, for Census 2000 there is a joint race and Hispanic origin edit, which can utilize Hispanic origin and race information that was reported in the inappropriate question.
For more information on Hispanic or Latino, please telephone 301-457-2403.