Home » Topics » Child Health » number of pregnancies - Kenya DHS 2008
|
|
|
|
Re: number of pregnancies - Kenya DHS 2008 [message #1533 is a reply to message #1529] |
Mon, 10 March 2014 15:06 |
Liz-DHS
Messages: 1516 Registered: February 2013
|
Senior Member |
|
|
Dear Pavani,
Here is a response from one of our experts, Dr. Shea Rutstein:
"The reproductive calendar is given as a string of positions, each representing a month. The first calendar string indicates, births (B), non-live birth terminations (T), each month of pregnancy (P), and numbers and letters that represent a month of use of contraception of various methods. See the data dictionary for the codes used. The position of the month of interview in the calendar is given by V018, the date of the start of the calendar by v017, and the length of the calendar string is given by V019. To use the calendar data, string functions are required that can be repeated for each position.
"Non-live births in column 1 of the reproductive calendar are given by "T"s. Live births are given by "B"s. Count the number of "T"s and "B"s in the 60 positions prior to the position of the survey date to get the number of pregnancies in the five years preceding the survey. For still births, only count the number of "T"s that are preceded by 6 to 8 "P"s (a month where the woman was pregnant) since we count as still births all those non-live birth terminations with pregnancy durations of 7 to 9 months (the T is the last month of the pregnancy). Note that for pregnancies that began prior to the calendar, the duration of pregnancy will not be given by the number of Ps.
|
|
|
Re: number of pregnancies - Kenya DHS 2008 [message #1534 is a reply to message #1533] |
Mon, 10 March 2014 15:26 |
|
user-rhs
Messages: 132 Registered: December 2013
|
Senior Member |
|
|
Pavani,
From the recode manual for DHS5 (which is what was used for the 08/09 Kenya DHS):
Column 1 description (VCAL_1):
Records each of the births and pregnancies during the calendar period, as well as each
episode of contraceptive use and non-use. The following codes are used in column 1:
0 Non-use of contraception
1 Pill
2 IUD
3 Injections
4 Diaphragm
5 Condom
6 Female sterilization
7 Male sterilization
8 Periodic abstinence/rhythm
9 Withdrawal
L Lactational amenorrhea
C Female condom
F Foam and Jelly
α Country-specific method 1
ß Country-specific method 2
τ Country-specific method 3
? Unknown method/missing data
P Pregnancy
T Terminated pregnancy/non-live birth
B Birth
W Other traditional methods
N Norplant
A Abstinence
So I think what you are interested in would be counting the number of "P"s within the string (divide by 9 months or how long pregnancies last), or rather, the first instance of "P" after a series of non-"P" characters. Unfortunately, there is no differentiation between abortion or stillbirth, but I suppose you can always go back to the data and see whether the woman ever had any stillbirths, and match the terminations with stillbirths in order to separate abortions from stillbirths.
Link: https://www.dhsprogram.com/pubs/pdf/DHSG4/Recode5DHS_23Augus t2012.pdf, VCAL coding is on page 72 of document (p. 76 of PDF file)
HTH,
RHS
[Updated on: Mon, 10 March 2014 15:30] Report message to a moderator
|
|
|
|
|
Re: Alignment of vcal_1 and vcal_2 codes in the data [message #8363 is a reply to message #8337] |
Thu, 15 October 2015 15:15 |
Liz-DHS
Messages: 1516 Registered: February 2013
|
Senior Member |
|
|
Dear User,
Here is a response from Senior Data Processing expert, Mr. Guillermo Rojas,
Quote:To identify discontinuations in column 2, users need to start from the last row (position 80) in column 1 and keep looking up until they found that a method changed. In the same position in column 2 of the last month of use there should be a code indicating the reason for discontinuation. To illustrate the problem let me put columns 1 and 2 aligned on top of each other. LLBPPPPPPPP000LLLLLLLLLLLLLLLLLLLLLLLLLLBPPPPPPPP0099LLLLLLLLLLLLLLBPPP
2 2 8
Quote: In the example above the respondent started using method L in position 76 (5th month from the bottom of the calendar) in column 1. The respondent used the method for 14 months and changed to method 9, she gave code 8 as the reason for discontinuation. In position 63 (which corresponds to the last month of use of method L), the discontinuation code is recorded in column 2. The respondent then used method 9 for two months and discontinued for reason 2, and so on.
Users need to be aware that chronologically the first month of the calendar correspond to the last position in column 1. Or to put in another way, position 80 of column 1 correspond to the first month where calendar data is collected. That first position correspond to the CMC code given by variable V017.
If you have additional questions, please feel free to post again. Thank you!
|
|
|
|
|
|
Goto Forum:
Current Time: Sun Jan 5 12:52:59 Coordinated Universal Time 2025
|