n4Studies
n4Studies
USD 1.99
2.3for iPhone
Age Rating
لقطات الشاشة لـ n4Studies
About n4Studies
Ease to calculate the sample size with n4Studies.
n4Studies makes it easy to calculate the sample size and the power of a study. It comes with ABSOLUTELY NO WARRANTY. However, It can help to learn and find the ways to calculate the sample size and power of the study in minutes.
Key features:
• Calculate the sample size for estimating an infinite population mean, finite population mean, infinite population proportion and finite population proportion
• Calculate the sample size for comparing two population means and two population proportions
• Calculate the sample size for the Case-Control for study, Matched Case-Control study, Cohort study, Randomized Controlled Trial, Non-inferiority trial and Equivalence trial
• Calculate the power of a study for comparing two population means and two population proportions
• Calculate the power of a study for the Case-Control for study, Matched Case-Control study, Cohort study, Randomized Controlled Trial, Non-inferiority trial and Equivalence trial
• Calculate the power of a study for the Case-Control for study, Matched Case-Control study, Cohort study, Randomized Controlled Trial, Non-inferiority trial and Equivalence trial
• You can send a result via Email to your colleague
n4Studies makes it easy to calculate the sample size and the power of a study. It comes with ABSOLUTELY NO WARRANTY. However, It can help to learn and find the ways to calculate the sample size and power of the study in minutes.
Key features:
• Calculate the sample size for estimating an infinite population mean, finite population mean, infinite population proportion and finite population proportion
• Calculate the sample size for comparing two population means and two population proportions
• Calculate the sample size for the Case-Control for study, Matched Case-Control study, Cohort study, Randomized Controlled Trial, Non-inferiority trial and Equivalence trial
• Calculate the power of a study for comparing two population means and two population proportions
• Calculate the power of a study for the Case-Control for study, Matched Case-Control study, Cohort study, Randomized Controlled Trial, Non-inferiority trial and Equivalence trial
• Calculate the power of a study for the Case-Control for study, Matched Case-Control study, Cohort study, Randomized Controlled Trial, Non-inferiority trial and Equivalence trial
• You can send a result via Email to your colleague
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تحديث لأحدث إصدار 2.3
Last updated on 20/02/2024
الإصدارات القديمة
Fix some issues
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Version History
2.3
20/02/2024
Fix some issues
2.2
03/08/2023
Version 2.2 - Add the probability calculations from odds ratio and risk ratio
2.1
29/06/2023
Version 2.1 - Fix about image attachments
Version 2.0 - Change all user interfaces
Version 2.0 - Change all user interfaces
2.0
27/06/2023
• Added a sample size for comparing more than two independent groups (three or four groups)
1.4.1
29/10/2014
This app has been updated by Apple to display the Apple Watch app icon.
• Changed the formulas for calculating the sample size of non-inferiority and superiority trial (two sample design)
• Added the sample size and power calculations for non-inferiority and superiority in one-sample design
• Changed the formulas for calculating the sample size of non-inferiority and superiority trial (two sample design)
• Added the sample size and power calculations for non-inferiority and superiority in one-sample design
1.3.0
26/08/2014
• Sample size formula(s) is/are shown on each sample size calculation and help screens
• Added the text fields for design effect in sample size calculations for estimations.
• Added the calculations for a test performance (sensitivity, specificity, positive and negative predictive value, positive and negative likelihood ratio, and etc.)
• Added the text fields for design effect in sample size calculations for estimations.
• Added the calculations for a test performance (sensitivity, specificity, positive and negative predictive value, positive and negative likelihood ratio, and etc.)
1.2.0
29/05/2014
fixed bugs
1.1.0
24/01/2014
• Add the results from a continuity correction
• Add the calculation for Chi-squared test, OR. and RR. from 2 by 2 table
• Add the calculation for Chi-squared test, OR. and RR. from 2 by 2 table
1.0.0
07/08/2013
n4Studies FAQ
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iPhone
Requiere iOS 16.0 o posterior.
n4Studies هي مدعومة على اللغات Inglés