Related Experiment Video
Updated: Aug 18, 2026

Anogenital Distance and Perineal Measurements of the Pelvic Organ Prolapse (POP) Quantification System
Published on: September 20, 2018
A comparison of satisfaction with types of diaphragms among women in a college population
1University of Michigan's Student Health Service.
Since the 1940s diaphragms have been a popular contraceptive device used by women in the United States. This study compared three popular diaphragms and women's subjective comparisons of comfort, ease of insertion, and overall satisfaction. None of the three types, the wideseal, coil spring, or arcing spring, was found to be statistically more comfortable or easier to insert. For overall satisfaction, women were more pleased with the coil spring than the wideseal (p = .0416 at two to four weeks, p = .0759 at four to six months, and p = .0049 at one year). Women who used the arcing spring and wideseal were more pleased with the wideseal at two to four weeks (p = .0571). No significant difference was found at one year. The study results demonstrate that certain diaphragm styles may improve women's use of and satisfaction with the diaphragm.
Since the 1940s diaphragms have been a popular contraceptive device used by women in the United States. This study compared three popular diaphragms and women's subjective comparisons of comfort, ease of insertion, and overall satisfaction. None of the three types, the wideseal, coil spring, or arcing spring, was found to be statistically more comfortable or easier to insert. For overall satisfaction, women were more pleased with the coil spring than the wideseal (p = .0416 at two to four weeks, p = .0759 at four to six months, and p = .0049 at one year). Women who used the arcing spring and wideseal were more pleased with the wideseal at two to four weeks (p = .0571). No significant difference was found at one year. The study results demonstrate that certain diaphragm styles may improve women's use of and satisfaction with the diaphragm.
Related Concept Videos
Surveys
Cross-Sectional Research
Self-Discrepancy Theory
Testing a Claim about Mean: Unknown Population SD
Estimating a population mean requires the samples to be approximately normally distributed. The data should be collected from the randomly selected samples having no sampling bias. There is no specific requirement for sample size. But if the sample size is less than 30, and we don't know the population standard deviation, a different approach is used; instead...
Comparing Experimental Results: Student's t-Test

