Data Dictionary: Census 2010
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Survey: Census 2010
Data Source: Census Bureau; Social Explorer
Table: PCT12G. Sex By Age (Two Or More Races) [209]
Universe: People who are Two or More Races
Table Details
PCT12G. Sex By Age (Two Or More Races)
Universe: People who are Two or More Races
Variable Label
PCT012G001
PCT012G002
PCT012G003
PCT012G004
PCT012G005
PCT012G006
PCT012G007
PCT012G008
PCT012G009
PCT012G010
PCT012G011
PCT012G012
PCT012G013
PCT012G014
PCT012G015
PCT012G016
PCT012G017
PCT012G018
PCT012G019
PCT012G020
PCT012G021
PCT012G022
PCT012G023
PCT012G024
PCT012G025
PCT012G026
PCT012G027
PCT012G028
PCT012G029
PCT012G030
PCT012G031
PCT012G032
PCT012G033
PCT012G034
PCT012G035
PCT012G036
PCT012G037
PCT012G038
PCT012G039
PCT012G040
PCT012G041
PCT012G042
PCT012G043
PCT012G044
PCT012G045
PCT012G046
PCT012G047
PCT012G048
PCT012G049
PCT012G050
PCT012G051
PCT012G052
PCT012G053
PCT012G054
PCT012G055
PCT012G056
PCT012G057
PCT012G058
PCT012G059
PCT012G060
PCT012G061
PCT012G062
PCT012G063
PCT012G064
PCT012G065
PCT012G066
PCT012G067
PCT012G068
PCT012G069
PCT012G070
PCT012G071
PCT012G072
PCT012G073
PCT012G074
PCT012G075
PCT012G076
PCT012G077
PCT012G078
PCT012G079
PCT012G080
PCT012G081
PCT012G082
PCT012G083
PCT012G084
PCT012G085
PCT012G086
PCT012G087
PCT012G088
PCT012G089
PCT012G090
PCT012G091
PCT012G092
PCT012G093
PCT012G094
PCT012G095
PCT012G096
PCT012G097
PCT012G098
PCT012G099
PCT012G100
PCT012G101
PCT012G102
PCT012G103
PCT012G104
PCT012G105
PCT012G106
PCT012G107
PCT012G108
PCT012G109
PCT012G110
PCT012G111
PCT012G112
PCT012G113
PCT012G114
PCT012G115
PCT012G116
PCT012G117
PCT012G118
PCT012G119
PCT012G120
PCT012G121
PCT012G122
PCT012G123
PCT012G124
PCT012G125
PCT012G126
PCT012G127
PCT012G128
PCT012G129
PCT012G130
PCT012G131
PCT012G132
PCT012G133
PCT012G134
PCT012G135
PCT012G136
PCT012G137
PCT012G138
PCT012G139
PCT012G140
PCT012G141
PCT012G142
PCT012G143
PCT012G144
PCT012G145
PCT012G146
PCT012G147
PCT012G148
PCT012G149
PCT012G150
PCT012G151
PCT012G152
PCT012G153
PCT012G154
PCT012G155
PCT012G156
PCT012G157
PCT012G158
PCT012G159
PCT012G160
PCT012G161
PCT012G162
PCT012G163
PCT012G164
PCT012G165
PCT012G166
PCT012G167
PCT012G168
PCT012G169
PCT012G170
PCT012G171
PCT012G172
PCT012G173
PCT012G174
PCT012G175
PCT012G176
PCT012G177
PCT012G178
PCT012G179
PCT012G180
PCT012G181
PCT012G182
PCT012G183
PCT012G184
PCT012G185
PCT012G186
PCT012G187
PCT012G188
PCT012G189
PCT012G190
PCT012G191
PCT012G192
PCT012G193
PCT012G194
PCT012G195
PCT012G196
PCT012G197
PCT012G198
PCT012G199
PCT012G200
PCT012G201
PCT012G202
PCT012G203
PCT012G204
PCT012G205
PCT012G206
PCT012G207
PCT012G208
PCT012G209
Notes:
Source: 2000 SF1 PCT12G.
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.
 
Two or More Races
People may choose to provide two or more races either by checking two or more race response check boxes, by providing multiple responses, or by some combination of check boxes and other responses. The race response categories shown on the questionnaire are collapsed into the five minimum race groups identified by OMB and the Census Bureaus Some Other Race category. For data product purposes, Two or More Races refers to combinations of two or more of the following race categories:
  1. White
  2. Black or African American
  3. American Indian or Alaska Native
  4. Asian
  5. Native Hawaiian or Other Pacific Islander
  6. Some Other Race
There are 57 possible combinations (see Figure B-1) involving the race categories shown above. Thus, according to this approach, a response of &quote;White&quote; and "Asian" was tallied as Two or More Races, while a response of Japanese and Chinese was not because Japanese and Chinese are both Asian responses.

Figure B-1. Two or More Races (57 Possible Specified Combinations)
  1. White; Black or African American
  2. White; American Indian and Alaska Native
  3. White; Asian
  4. White; Native Hawaiian and Other Pacific Islander
  5. White; Some Other Race
  6. Black or African American; American Indian and Alaska Native
  7. Black or African American; Asian
  8. Black or African American; Native Hawaiian and Other Pacific Islander
  9. Black or African American; Some Other Race
  10. American Indian and Alaska Native; Asian
  11. American Indian and Alaska Native; Native Hawaiian and Other Pacific Islander
  12. American Indian and Alaska Native; Some Other Race
  13. Asian; Native Hawaiian and Other Pacific Islander
  14. Asian; Some Other Race
  15. Native Hawaiian and Other Pacific Islander; Some Other Race
  16. White; Black or African American; American Indian and Alaska Native
  17. White; Black or African American; Asian
  18. White; Black or African American; Native Hawaiian and Other Pacific Islander
  19. White; Black or African American; Some Other Race
  20. White; American Indian and Alaska Native; Asian
  21. White; American Indian and Alaska Native; Native Hawaiian and Other Pacific Islander
  22. White; American Indian and Alaska Native; Some Other Race
  23. White; Asian; Native Hawaiian and Other Pacific Islander
  24. White; Asian; Some Other Race
  25. White; Native Hawaiian and Other Pacific Islander; Some Other Race
  26. Black or African American; American Indian and Alaska Native; Asian
  27. Black or African American; American Indian and Alaska Native; Native Hawaiian and Other Pacific Islander
  28. Black or African American; American Indian and Alaska Native; Some Other Race
  29. Black or African American; Asian; Native Hawaiian and Other Pacific Islander
  30. Black or African American; Asian; Some Other Race
  31. Black or African American; Native Hawaiian and Other Pacific Islander; Some Other Race
  32. American Indian and Alaska Native; Asian; Native Hawaiian and Other Pacific Islander
  33. American Indian and Alaska Native; Asian; Some Other Race
  34. American Indian and Alaska Native; Native Hawaiian and Other Pacific Islander; Some Other Race
  35. Asian; Native Hawaiian and Other Pacific Islander; Some Other Race
  36. White; Black or African American; American Indian and Alaska Native; Asian
  37. White; Black or African American; American Indian and Alaska Native; Native Hawaiian and Other Pacific Islander
  38. White; Black or African American; American Indian and Alaska Native; Some Other Race
  39. White; Black or African American; Asian; Native Hawaiian and Other Pacific Islander
  40. White; Black or African American; Asian; Some Other Race
  41. White; Black or African American; Native Hawaiian and Other Pacific Islander; Some Other Race
  42. White; American Indian and Alaska Native; Asian; Native Hawaiian and Other Pacific Islander
  43. White; American Indian and Alaska Native; Asian; Some Other Race
  44. White; American Indian and Alaska Native; Native Hawaiian and Other Pacific Islander; Some Other Race
  45. White; Asian; Native Hawaiian and Other Pacific Islander; Some Other Race
  46. Black or African American; American Indian and Alaska Native; Asian; Native Hawaiian and Other Pacific Islander
  47. Black or African American; American Indian and Alaska Native; Asian; Some Other Race
  48. Black or African American; American Indian and Alaska Native; Native Hawaiian and Other Pacific Islander; Some Other Race
  49. Black or African American; Asian; Native Hawaiian and Other Pacific Islander; Some Other Race
  50. American Indian and Alaska Native; Asian; Native Hawaiian and Other Pacific Islander; Some Other Race
  51. White; Black or African American; American Indian and Alaska Native; Asian; Native Hawaiian and Other Pacific Islander
  52. White; Black or African American; American Indian and Alaska Native; Asian; Some Other Race
  53. White; Black or African American; American Indian and Alaska Native; Native Hawaiian and Other Pacific Islander; Some Other Race
  54. White; Black or African American; Asian; Native Hawaiian and Other Pacific Islander; Some Other Race
  55. White; American Indian and Alaska Native; Asian; Native Hawaiian and Other Pacific Islander; Some Other Race
  56. Black or African American; American Indian and Alaska Native; Asian; Native Hawaiian and Other Pacific Islander; Some Other Race
  57. White; Black or African American; American Indian and Alaska Native; Asian; Native Hawaiian and Other Pacific Islander; Some Other Race