Data Dictionary: Census 2010
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Survey: Census 2010
Data Source: Census Bureau; Social Explorer
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
Notes:
Source: 2000 SF1 PCT12D.
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.