Related Experiment Video
Updated: Sep 29, 2026

Collection of Human Follicular Fluid, Follicle Somatic Cells, and Immature Oocytes from Individuals Undergoing In Vitro Fertilization
Published on: October 24, 2025
Fertility preferences and contraceptive use in Pakistan
Abstract:
"The objective of this paper is...to analyse the levels and trends of fertility preferences in Pakistan during the 1975-1980 period and to see if any changes in the preferences have occurred over time even in the absence of the information, education and communication (IE&C) component of the family planning programme. Our hypothesis is that there exists a conscious choice of reproductive goals among married couples and there is no likelihood of any significant change in these expressed choices over time for the last twenty years." The data are from the 1979-1980 Population, Labour Force and Migration (PLM) Survey and the 1975 Pakistan Fertility Survey. "The analysis of data obtained for the two national surveys indicates that the surveys in question are highly consistent with regard to fertility preferences. They also indicate that the magnitude of family size preferences did not change appreciably between the two surveys. Moreover, the period and cumulative fertility behaviour in both the surveys did not record any significant variation.... When contraceptive behaviour was analysed with the reported fertility preferences, it appeared that the women were quite consistent in their stated fertility attitudes." Comments by Khalil A. Siddiqui are included (pp. 617-8).
Related Concept Videos
Birth Control Methods
Infertility in Females
Endometriosis, a condition characterized by abnormal growth of endometrial...
Infertility in Males
Natural Selection and Mating Preferences
Females, due to their biological roles in conception, pregnancy, and nursing, inherently...
Close Relationships and Culture
Testing a Claim about Population Proportion
There are two methods of testing a claim about a population proportion: (1) Using the sample proportion from the data where a binomial distribution is approximated to the normal distribution and (2) Using the binomial probabilities calculated from the data.
The first method uses normal distribution as an approximation to the binomial distribution. The requirements are as follows: sample size is large...
