Majda Elfseyie

3 Questions 2 Answers 0 Followers

Questions related from Majda Elfseyie

What is the minimum number of respondents for a pilot study questionnaire?

What is the good sample size for a pilot study questionnaire to ensuring precise data collection? •However, some guidelines suggest that typical pilot sizes range from 5 to 20 participants, which...

13 May 2024 2,124 3 View

For sample size calculation , when your sampling are convenience ,does it required attrition?

For example when your target sample was 400 subjects, among this sample 360 subjects met the inclusion and exclusion criteria for the study, therefore the new sample will be 360 subjects, does it...

16 December 2021 1,539 3 View

What is the advantages of determining the prevalence of dental anomalies at the mixed dentition stage?

For example , if I have investigated the prevalence of hypodontia, at which stage my sample should be targeted either mixed dentition or permanent one?

26 November 2021 9,614 5 View