National Demographic and Health Survey 2003
Philippines, 2003
Reference ID
PHL-NSO-NDHS-2003-v01
Producer(s)
National Statistics Office
Metadata
Related Microdata
Created on
Sep 14, 2021
Last modified
Sep 14, 2021
Page views
588934
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- Data files
- HOUSEHOLD
- INDIVIDUAL
Current age of respondent (LQ106)
Data File: INDIVIDUAL
Overview
vald
2628
invd
13619
min
0
max
99
Interval
contin
Decimal
0
range
0 - 99
Questions and instructions
How old were you at your last birthday?
COMPARE AND CORRECT 105 AND/OR 106 IF INCONSISTENT.
COMPARE AND CORRECT 105 AND/OR 106 IF INCONSISTENT.
Value | Category | Cases | |
---|---|---|---|
97 | 38 | 50% | |
98 | 38 | 50% |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
Obtain her age in completed years, that is, her age at her last birthday. Recording the age of the woman may be done in one of four ways, depending on the type of information provided by the respondent.
1. The woman knows her age.
If the woman tells her age, simply write it in the space provided.
2. The woman does not know her age, but year of birth is reported in Q. 105.
If the woman does not know her age, but she reported a year of birth in Q. 105, then compute her age as follows:
If the woman had her birthday in the current year, subtract the year of birth from the current year, 2003. If the woman has not had her birthday in the current year, subtract the year of birth from last year 2002. If the woman does not keep track of the time within a year when her birthday falls; it is sufficient to subtract year of birth from the current year 2003.
3. The woman does not know her age, and year of birth is not reported in Q. 105.
If the woman does not know how old she was when she got married or had her first child, and then try to estimate how long ago she got married or had her first child. For example, if she says she was 19 years old when she had her first child, and that the child is now 12 years old, she is probably 31 years old.
Relate her age to that of someone else in the household whose age is more reliably known. Try to determine how old she was at the time of an important event, flood, earthquake, change in political regime and add her age at that time to the number of years that have elapsed since the event.
4. The woman does not know her age and probing did not help.
If probing does not help in determining the respondent's age, and date of birth was not recorded in Q. 105, estimate her age. Remember, this is a last resort to be used only when all efforts at probing have failed.
Remember, filling in an answer to Q. 106 is a must.
Consistency Check: Date of Birth and Age
Check the consistency of the reported year of birth (Q. 105) and age (Q. 106).
The concept underlying the check is that the woman's age plus her year of birth must equal the year in which she last had a birthday. There are two methods for checking whether the age and year of birth are consistent - the arithmetic method and the chart method. Either method may be used, but do not perform the check until after you have asked Q. 105 and Q. 106.
I. Arithmetic method. Choose the procedure explained in 1a. or 1b. to do the arithmetic, depending on the type of information you have recorded in Q. 105. Use the margins of the questionnaire to do the necessary arithmetic.
1.a If both month and year are recorded in Q. 105.
If the month of birth is before the month of interview (she has had her birthday this year), then her age plus her year of birth should equal to 2003.
If the month of birth is after the month of interview (she has not had her birthday this year), then her age plus her year of birth should equal to 2002.
If the month of birth is the same as the month of interview, then a sum of either 2002 or 2003 is acceptable. If the sum is incorrect, then either the year of birth or the age (or both) are incorrect and need to be corrected.
If the sum is off by exactly one year, then it is also possible that the month of birth is incorrect and the other information is accurate. In such cases, the age and the month and year of birth all need to be reviewed to see where the error lies.
Example:
If a respondent tells that she was born in January 1956, she is 47 years old, and interviewing was done in July 2003, add 1956 to 47. If the information the respondent gave is consistent, the sum should be 2003.
If another respondent tells that she was born in December 1965 and she is 37 years old, the sum should equal 2002 since she will not become a full year older until December 2003.
1.b If only year of birth is recorded in Q. 105.
Add the year of birth to the respondent's age and accept a sum of either 2002 or 2003. For example, if she says she was born in 1974 but she does not know the month, she should be either 28 (since 1974+28=2002) or 29 (since 1974+29=2003). If the sum does not equal either 2002 or 2003, probe to find out if the year of birth or age is incorrect.
2. How to correct inconsistent answers.
If the age plus the year of birth do not add to 2002 or 2003 as appropriate, probe to get consistent information. For example, if the sum equals 2001 and it should be 2002, then you need to add 1 to either the age or the year of birth after checking with the respondent to see which one is wrong. If the sum adds to 2004 and it should be 2002, you need to subtract 2 from either the age or the year of birth or else subtract 1 from the age and the year of birth. It is important to understand that either or both the age and year of birth may be incorrect.
II. Chart method. Use the Age-Birth Date Consistency Chart in the succeeding page of the Individual Woman's Questionnaire to check consistency. Choose the procedure explained below depending on the type of information you have recorded in Q. 105.
1.a If both month and year are recorded in Q. 105.
Check with the chart the age you recorded in Q. 106. If the month of birth is before the month of interview (she has already had her birthday this year), use the right hand column to see what year of birth is consistent with that age. If the month of birth is after the month of interview (she has not yet had her birthday this year), use the left hand column to see what year of birth is consistent with that age. If the year of birth recorded in Q. 105 is not the same as the year of birth in the chart, then Q. 105 and Q. 106 are inconsistent and you will have to make a correction.
1.b If only year of birth is recorded in Q. 105.
Check with the chart the age you recorded in Q. 106. The year of birth listed in either the left or right hand column is consistent with that age. If the year of birth recorded in Q. 105 is not the same as one of the two years of birth recorded in the chart, then Q. 105 and Q. 106 are inconsistent and you will have to make a correction.
2. How to correct inconsistent answers.
If the recorded year of birth (Q. 105) does not agree with the year in the chart, correct the inconsistency. This is done by further probing and adjustment of either the age information or the date information, or both. It is important to understand that either or both of the two pieces of information may be incorrect.
Do not always assume that an inconsistency means, for instance, that the date of birth was given correctly, and that the age is incorrect. It could be that the date or both the age and the date are incorrect.
What to do if the woman was found out to be ineligible
Before moving on to the next question, verify that the respondent is indeed eligible. If the woman is younger than 15 years or older than 49, the following should be done:
1. Terminate the interview. Do this tactfully by asking 2 or 3 more questions and then thank the respondent for her cooperation.
2. Write “Ineligible” on the first page of the questionnaire
3. Correct the information for this woman on the Household Questionnaire. The information to be corrected in the Household Questionnaire are:
a. Age in Column 7;
b. Eligibility status of the woman in Column 8; and
c. Total Eligible Women in the Cover Page. (Correct also the number of eligible women in the Interviewer's Assignment Sheet)
Note that the only time to go back to the Household Questionnaire will be to correct information that affects the eligibility status of a woman.
Note: If during the visit the respondent is 49 (making her eligible as respondent in Individual Woman's Questionnaire and she turned 50 during your next visit (s) because her birthday falls in between your first and next visit(s), she is still considered as she is an eligible respondent and continue with the interview. For birthdays falling in between visits, the age during the first visit should prevail.
1. The woman knows her age.
If the woman tells her age, simply write it in the space provided.
2. The woman does not know her age, but year of birth is reported in Q. 105.
If the woman does not know her age, but she reported a year of birth in Q. 105, then compute her age as follows:
If the woman had her birthday in the current year, subtract the year of birth from the current year, 2003. If the woman has not had her birthday in the current year, subtract the year of birth from last year 2002. If the woman does not keep track of the time within a year when her birthday falls; it is sufficient to subtract year of birth from the current year 2003.
3. The woman does not know her age, and year of birth is not reported in Q. 105.
If the woman does not know how old she was when she got married or had her first child, and then try to estimate how long ago she got married or had her first child. For example, if she says she was 19 years old when she had her first child, and that the child is now 12 years old, she is probably 31 years old.
Relate her age to that of someone else in the household whose age is more reliably known. Try to determine how old she was at the time of an important event, flood, earthquake, change in political regime and add her age at that time to the number of years that have elapsed since the event.
4. The woman does not know her age and probing did not help.
If probing does not help in determining the respondent's age, and date of birth was not recorded in Q. 105, estimate her age. Remember, this is a last resort to be used only when all efforts at probing have failed.
Remember, filling in an answer to Q. 106 is a must.
Consistency Check: Date of Birth and Age
Check the consistency of the reported year of birth (Q. 105) and age (Q. 106).
The concept underlying the check is that the woman's age plus her year of birth must equal the year in which she last had a birthday. There are two methods for checking whether the age and year of birth are consistent - the arithmetic method and the chart method. Either method may be used, but do not perform the check until after you have asked Q. 105 and Q. 106.
I. Arithmetic method. Choose the procedure explained in 1a. or 1b. to do the arithmetic, depending on the type of information you have recorded in Q. 105. Use the margins of the questionnaire to do the necessary arithmetic.
1.a If both month and year are recorded in Q. 105.
If the month of birth is before the month of interview (she has had her birthday this year), then her age plus her year of birth should equal to 2003.
If the month of birth is after the month of interview (she has not had her birthday this year), then her age plus her year of birth should equal to 2002.
If the month of birth is the same as the month of interview, then a sum of either 2002 or 2003 is acceptable. If the sum is incorrect, then either the year of birth or the age (or both) are incorrect and need to be corrected.
If the sum is off by exactly one year, then it is also possible that the month of birth is incorrect and the other information is accurate. In such cases, the age and the month and year of birth all need to be reviewed to see where the error lies.
Example:
If a respondent tells that she was born in January 1956, she is 47 years old, and interviewing was done in July 2003, add 1956 to 47. If the information the respondent gave is consistent, the sum should be 2003.
If another respondent tells that she was born in December 1965 and she is 37 years old, the sum should equal 2002 since she will not become a full year older until December 2003.
1.b If only year of birth is recorded in Q. 105.
Add the year of birth to the respondent's age and accept a sum of either 2002 or 2003. For example, if she says she was born in 1974 but she does not know the month, she should be either 28 (since 1974+28=2002) or 29 (since 1974+29=2003). If the sum does not equal either 2002 or 2003, probe to find out if the year of birth or age is incorrect.
2. How to correct inconsistent answers.
If the age plus the year of birth do not add to 2002 or 2003 as appropriate, probe to get consistent information. For example, if the sum equals 2001 and it should be 2002, then you need to add 1 to either the age or the year of birth after checking with the respondent to see which one is wrong. If the sum adds to 2004 and it should be 2002, you need to subtract 2 from either the age or the year of birth or else subtract 1 from the age and the year of birth. It is important to understand that either or both the age and year of birth may be incorrect.
II. Chart method. Use the Age-Birth Date Consistency Chart in the succeeding page of the Individual Woman's Questionnaire to check consistency. Choose the procedure explained below depending on the type of information you have recorded in Q. 105.
1.a If both month and year are recorded in Q. 105.
Check with the chart the age you recorded in Q. 106. If the month of birth is before the month of interview (she has already had her birthday this year), use the right hand column to see what year of birth is consistent with that age. If the month of birth is after the month of interview (she has not yet had her birthday this year), use the left hand column to see what year of birth is consistent with that age. If the year of birth recorded in Q. 105 is not the same as the year of birth in the chart, then Q. 105 and Q. 106 are inconsistent and you will have to make a correction.
1.b If only year of birth is recorded in Q. 105.
Check with the chart the age you recorded in Q. 106. The year of birth listed in either the left or right hand column is consistent with that age. If the year of birth recorded in Q. 105 is not the same as one of the two years of birth recorded in the chart, then Q. 105 and Q. 106 are inconsistent and you will have to make a correction.
2. How to correct inconsistent answers.
If the recorded year of birth (Q. 105) does not agree with the year in the chart, correct the inconsistency. This is done by further probing and adjustment of either the age information or the date information, or both. It is important to understand that either or both of the two pieces of information may be incorrect.
Do not always assume that an inconsistency means, for instance, that the date of birth was given correctly, and that the age is incorrect. It could be that the date or both the age and the date are incorrect.
What to do if the woman was found out to be ineligible
Before moving on to the next question, verify that the respondent is indeed eligible. If the woman is younger than 15 years or older than 49, the following should be done:
1. Terminate the interview. Do this tactfully by asking 2 or 3 more questions and then thank the respondent for her cooperation.
2. Write “Ineligible” on the first page of the questionnaire
3. Correct the information for this woman on the Household Questionnaire. The information to be corrected in the Household Questionnaire are:
a. Age in Column 7;
b. Eligibility status of the woman in Column 8; and
c. Total Eligible Women in the Cover Page. (Correct also the number of eligible women in the Interviewer's Assignment Sheet)
Note that the only time to go back to the Household Questionnaire will be to correct information that affects the eligibility status of a woman.
Note: If during the visit the respondent is 49 (making her eligible as respondent in Individual Woman's Questionnaire and she turned 50 during your next visit (s) because her birthday falls in between your first and next visit(s), she is still considered as she is an eligible respondent and continue with the interview. For birthdays falling in between visits, the age during the first visit should prevail.
Description
Current age of respondent - age in completed years, or age as of last birthday
All women 15 to 49 years old who were identified in the Household Questionnaire of all sample households