Data Dictionary: Census 2010
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Survey: Census 2010
Data Source: Census Bureau; Social Explorer
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
Notes:
Source: 2000 SF1 PCT12L.
Relevant Documentation:
Excerpt from: Social Explorer, U.S. Census Bureau; 2010 Census of Population and Housing, Summary File 1: Technical Documentation, Issued June 2011.
 
Sex
Individuals were asked to mark either "male&quot or "female" to indicate their sex. For most cases in which sex was not reported, the appropriate entry was determined from the persons given (i.e., first) name and household relationship. Otherwise, sex was allocated according to the relationship to the householder and the age of the person. (For more information on allocation, see "2010 Census: Operational Overview and Accuracy of the Data.")


Sex Ratio
The sex ratio represents the balance between the male and female populations. Ratios above 100 indicate a larger male population, and ratios below 100 indicate a larger female population. This measure is derived by dividing the total number of males by the total number of females and then multiplying by 100. It is rounded to the nearest tenth.

Comparability
A question on the sex of individuals has been asked of the total population in every census.

Excerpt from: Social Explorer, U.S. Census Bureau; 2010 Census of Population and Housing, Summary File 1: Technical Documentation, Issued June 2011.
 
Age
The data on age were derived from answers to a two-part question (i.e., age and date of birth). The age classification for a person in census tabulations is the age of the person in completed years as of April 1, 2010, the census reference date. Both age and date of birth responses are used in combination to
determine the most accurate age for the person as of the census reference date. Inconsistently reported and missing values are assigned or allocated based on the values of other variables for that person, from other people in the household or from people in other households (i.e., hot-deck imputation).
Age data are tabulated in age groupings and single years of age. Data on age also are used to classify other characteristics in census tabulations.


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 using a linear interpolation method.

Limitation of the data
There is some tendency for respondents to provide their age as of the date they completed the census questionnaire or interview, not their age as of the census reference date. The two-part question and editing procedures have attempted to minimize the effect of this reporting problem on tabulations. Additionally, the current census age question displays the census reference date prominently, and interviewer training emphasizes the importance of collecting age as of the reference date.

Respondents sometimes round a persons age up if they were close to having a birthday. For most single years of age, the misstatements are largely offsetting. The problem is most pronounced at age 0. Also, there may have been more rounding up to age 1 to avoid reporting age as 0 years. (Age in completed months was not collected for infants under age 1.) Editing procedures correct this problem.

There is some respondent resistance to reporting the ages of babies in completed years (i.e., 0 years old when the baby is under 1 year old). Instead, babies ages are sometimes reported in months. The two-part question along with enhanced editing and data capture procedures correct much of this problem before the age data are finalized in tabulations. Additionally, the current census age question includes an instruction for babies ages to be answered as 0 years old when they are under 1 year old.

Age heaping is a common age misreporting error. Age heaping is the tendency for people to overreport ages (or years of birth) that end in certain digits (commonly digits 0 or 5) and underreport ages or years of birth ending in other digits. The two-part question helps minimize the effect of age heaping on the final tabulations.

Age data for centenarians have a history of data quality challenges. The counts in the 1970 and 1980 Censuses for people 100 years and over were substantially overstated. Editing and data collection methods have been enhanced in order to meet the data quality challenges for this population.

It also has been documented that the population aged 69 in the 1970 Census and the population aged 79 in the 1980 Census were overstated. The population aged 89 in 1990 and the population aged 99 in 2000 did not have an overstated count. (For more information on the design of the age question, see the Comparability section below.)

Comparability
Age data have been collected in every census. However, there have been some differences in the way they have been collected and processed over time. In the 2010 Census (as in Census 2000), each individual provided both an age and an exact date of birth. The 1990 Census collected age and year of birth. Prior censuses had collected month and quarter of birth in addition to age and year of birth. The 1990 Census change was made so that coded information could be obtained for both age and year 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 2010 Census: Operational Overview and Accuracy of the Data.)

Excerpt from: Social Explorer, U.S. Census Bureau; 2010 Census of Population and Housing, Summary File 1: Technical Documentation, Issued June 2011.
 
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 people who indicate their race as Asian Indian,Chinese,Filipino,Korean,Japanese,Vietnamese, and Other Asian or provide other detailed Asian responses.
    Asian Indian-Includes people who indicate their race as Asian Indian or report entries such as India or East Indian.
    Bangladeshi-Includes people who provide a response such as Bangladeshi or Bangladesh.
    Bhutanese-Includes people who provide a response such as Bhutanese or Bhutan.
    Burmese-Includes people who provide a response such as Burmese or Burma.
    Cambodian-Includes people who provide a response such as Cambodian or Cambodia.
    Chinese-Includes people who indicate their race as Chinese or report entries such as China 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 report entries such as Philippines or Filipino American.
    Hmong-Includes people who provide a response such as Hmong or Mong.
    Indonesian-Includes people who provide a response such as Indonesian or Indonesia.
    Japanese-Includes people who indicate their race as Japanese or report entries such as Japan or Japanese American.
    Korean-Includes people who indicate their race as Korean or report entries such as Korea or Korean American.
Definitions of Subject Characteristics B-9U.S. Census Bureau, 2010 Census Summary File 1
    Laotian-Includes people who provide a response such as Laotian or Laos.
    Malaysian-Includes people who provide a response such as Malaysian or Malaysia.
    Nepalese-Includes people who provide a response such as Nepalese or Nepal.
    Pakistani-Includes people who provide a response such as Pakistani or Pakistan.
    Sri Lankan-Includes people who provide a response such as Sri Lankan or Sri Lanka.
    Taiwanese-Includes people who provide a response such as Taiwanese or Taiwan.
    Thai-Includes people who provide a response such as Thai or Thailand.
    Vietnamese-Includes people who indicate their race as Vietnamese or report entries such as Vietnam or Vietnamese American.
    Other Asian, specified-Includes people who provide a response of another Asian group, such as Iwo Jiman, Maldivian, Mongolian, Okinawan, or Singaporean.
    Other Asian, not specified-Includes respondents who checked the Other Asian response category on the census questionnaire and did not write in a specific group or wrote in a generic term such as Asian or Asiatic.

Excerpt from: Social Explorer, U.S. Census Bureau; 2010 Census of Population and Housing, Summary File 1: Technical Documentation, Issued June 2011.
 
Hispanic or Latino Origin
The data on the Hispanic or Latino population were derived from answers to a question that was asked of all people. The terms Hispanic,Latino, and Spanish are used interchangeably. Some respondents identify with all three terms, while others may identify with only one of these three specific terms. People who identify with the terms Hispanic,Latino, or Spanish are those who classify themselves in one of the specific Hispanic, Latino, or Spanish categories listed on the questionnaire (Mexican,Puerto Rican, or Cuban) as well as those who indicate that they are another Hispanic, Latino, or Spanish origin. People who do not identify with one of the specific origins listed on the questionnaire but indicate that they are another Hispanic, Latino, or Spanish origin are those whose origins are from Spain, the Spanish-speaking countries of Central or South America, or the Dominican Republic. Up to two write-in responses to the another Hispanic, Latino, or Spanish origin category are 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 Hispanic, Latino, or Spanish may be 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 Hispanic, Latino, or Spanish, the origin of the householder is used. (See the discussion of householder under "Household Type and Relationship.")

If an individual did not provide a Hispanic origin response, his or her origin was allocated using specific rules of precedence of household relationship. For example, if origin was missing for a natural-born child in the household, then either the origin of the householder, another natural-born child, or spouse of the householder was allocated.
If Hispanic origin was not reported for anyone in the household and origin could not be obtained from a response to the race question, then their origin was assigned based on their prior census record (either from Census 2000 or the American Community Survey), if available. If not, then the Hispanic origin of a householder in a previously processed household with the same race was allocated. (For more information on allocation, see "2010 Census: Operational Overview and Accuracy of the Data.") As in Census 2000, surnames (Spanish and non-Spanish) were used to assist in allocating an origin or race.

Comparability
There are four changes to the Hispanic origin question for the 2010 Census. First, the wording of the question differs from that in 2000. In 2000, the question asked if the person was Spanish/Hispanic/Latino. In 2010, the question asks if the person is of Hispanic, Latino, or Spanish origin. Second, in 2000, the question provided an instruction, Mark ý the 'No'box if not Spanish/Hispanic/Latino. The 2010 Census question provided no specific instruction for non-Hispanics. Third, in 2010, the Yes, another Hispanic, Latino, or Spanish origin category provided examples of six Hispanic origin groups (Argentinean, Colombian, Dominican, Nicaraguan, Salvadoran, Spaniard, and so on) and instructed respondents to print origin. In 2000, no Hispanic origin examples were given. Finally, the fourth change was the addition of a new instruction in the 2010 Census that was not used in Census 2000. The instruction is stated as follows: NOTE: Please answer BOTH Question 8 about Hispanic origin and Question 9 about race. For this census, Hispanic origins are not races.

There were two 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 was 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 emphasized the need for both pieces of information.

Furthermore, there was 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 was a joint race and Hispanic origin edit that utilized Hispanic origin and race information regardless of the location.