Data Dictionary: Census 2000
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Survey: Census 2000
Data Source: U.S. Census Bureau
Table: PCT7. Sex By Marital Status By Age For The Population 15+ Years [163]
Universe: Population 15 years and over
Table Details
PCT7. Sex By Marital Status By Age For The Population 15+ Years
Universe: Population 15 years and over
Variable Label
PCT007001
PCT007002
PCT007003
PCT007004
PCT007005
PCT007006
PCT007007
PCT007008
PCT007009
PCT007010
PCT007011
PCT007012
PCT007013
PCT007014
PCT007015
PCT007016
PCT007017
PCT007018
PCT007019
PCT007020
PCT007021
PCT007022
PCT007023
PCT007024
PCT007025
PCT007026
PCT007027
PCT007028
PCT007029
PCT007030
PCT007031
PCT007032
PCT007033
PCT007034
PCT007035
PCT007036
PCT007037
PCT007038
PCT007039
PCT007040
PCT007041
PCT007042
PCT007043
PCT007044
PCT007045
PCT007046
PCT007047
PCT007048
PCT007049
PCT007050
PCT007051
PCT007052
PCT007053
PCT007054
PCT007055
PCT007056
PCT007057
PCT007058
PCT007059
PCT007060
PCT007061
PCT007062
PCT007063
PCT007064
PCT007065
PCT007066
PCT007067
PCT007068
PCT007069
PCT007070
PCT007071
PCT007072
PCT007073
PCT007074
PCT007075
PCT007076
PCT007077
PCT007078
PCT007079
PCT007080
PCT007081
PCT007082
PCT007083
PCT007084
PCT007085
PCT007086
PCT007087
PCT007088
PCT007089
PCT007090
PCT007091
PCT007092
PCT007093
PCT007094
PCT007095
PCT007096
PCT007097
PCT007098
PCT007099
PCT007100
PCT007101
PCT007102
PCT007103
PCT007104
PCT007105
PCT007106
PCT007107
PCT007108
PCT007109
PCT007110
PCT007111
PCT007112
PCT007113
PCT007114
PCT007115
PCT007116
PCT007117
PCT007118
PCT007119
PCT007120
PCT007121
PCT007122
PCT007123
PCT007124
PCT007125
PCT007126
PCT007127
PCT007128
PCT007129
PCT007130
PCT007131
PCT007132
PCT007133
PCT007134
PCT007135
PCT007136
PCT007137
PCT007138
PCT007139
PCT007140
PCT007141
PCT007142
PCT007143
PCT007144
PCT007145
PCT007146
PCT007147
PCT007148
PCT007149
PCT007150
PCT007151
PCT007152
PCT007153
PCT007154
PCT007155
PCT007156
PCT007157
PCT007158
PCT007159
PCT007160
PCT007161
PCT007162
PCT007163
Relevant Documentation:
Excerpt from: Social Explorer, U.S. Census Bureau; 2000 Census of Population and Housing, Summary File 3: Technical Documentation, 2002.
 
Sex
The data on sex, which was asked of all people, were derived from answers to long-form questionnaire Item 3 and short-form questionnaire Item 5. 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 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 then multiplying by 100. This measure is rounded to the nearest tenth.

Comparability
A question on the sex of individuals has been included in every census. Census 2000 was the first time that first name was used for imputation of cases where sex was not reported.

Excerpt from: Social Explorer, U.S. Census Bureau; 2000 Census of Population and Housing, Summary File 3: Technical Documentation, 2002.
 
Marital Status
The data on marital status were derived from answers to long-form questionnaire Item 7, "What is this persons marital status," which was asked of a sample of the population. The marital status classification refers to the status at the time of enumeration. Data on marital status are tabulated only for the population 15 years old and over.

Each person was asked whether they were "Now married," "Widowed," "Divorced," "Separated," or "Never married." Couples who live together (for example, people in common-law marriages) were able to report the marital status they considered to be the most appropriate.

Never married
Never married includes all people who have never been married, including people whose only marriage(s) was annulled.

Ever married
Ever married includes people married at the time of enumeration, along with those who are separated, widowed, or divorced.

Now married, except separated
Now married, except separated includes people whose current marriage has not ended through widowhood or divorce; or who are not currently separated. The category also may include people in common-law marriages if they consider this category the most appropriate. In certain tabulations, currently married people are further classified as "spouse present" or "spouse absent."

Separated
Separated includes people with legal separations, people living apart with intentions of obtaining a divorce, and people who are permanently or temporarily separated because of marital discord.

Widowed
This category includes widows and widowers who have not remarried.

Divorced
This category includes people who are legally divorced and who have not remarried.

Now married
All people whose current marriage has not ended by widowhood or divorce. This category includes people defined above as "separated."

Spouse present
Married people whose wives or husbands were enumerated as members of the same household or the same group quarters facility, including those whose spouses may have been temporarily absent for such reasons as travel or hospitalization.

Spouse absent
Married people whose wives or husbands were not enumerated as members of the same household or the same group quarters facility.

Separated
Defined above.

Spouse absent, other
Married people whose wives or husbands were not enumerated as members of the same household, excluding separated. For example, this includes any person whose spouse was employed and living away from home, in an institution, or away in the armed forces.

Differences between the number of currently married males and the number of currently married females occur because of reporting differences and because some husbands and wives have their usual residence in different areas. These differences also can occur because different weights are applied to the individuals data. Any differences between the number of "now married, spouse present" males and females are due solely to sample weighting procedures. By definition, the numbers would be the same.

Comparability
Census 2000 marital status definitions are the same as those used in 1990. A general marital status question has been asked in every census since 1880. While the marital status question in Census 2000 is identical to that of 1990, in Census 2000 the question was only asked on the long form, while in previous years it was asked on the short form.

Excerpt from: Social Explorer, U.S. Census Bureau; 2000 Census of Population and Housing, Summary File 3: Technical Documentation, 2002.
 
Age
The data on age, which was asked of all people, were derived from answers to the long-form questionnaire Item 4 and short-form questionnaire Item 6. The age classification is based on the age of the person in complete years as of April 1, 2000. The age of the person usually was 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. Therefore, age is tabulated by single years of age and by many different groupings, such as 5-year age groups.

Median age
Median age divides the age distribution into two equal parts: one-half of the cases falling below the median age and one-half above the median. Median age is computed on the basis of a single year of age standard distribution (see the "Standard Distributions" section under "Derived Measures"). Median age is rounded to the nearest tenth. (For more information on medians, see "Derived Measures".)

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 5. 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 69 years old in 1970 and 79 years old in 1980. Improvements have been made since then in the questionnaire design and in the imputation procedures that have minimized these problems.

Review of detailed 1990 census information indicated that respondents tended to provide their age as of the date of completion of 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 1 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 1 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 1 to avoid reporting age as zero years. (Age in complete months was not collected for infants under age 1.)

The reporting of age 1 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.")