longpower

Sample Size Calculations for Longitudinal Data

CRAN Package

Compute power and sample size for linear models of longitudinal data. Supported models include mixed-effects models and models fit by generalized least squares and generalized estimating equations. The package is described in Iddi and Donohue (2022) doi:10.32614/RJ-2022-022. Relevant formulas are derived by Liu and Liang (1997) doi:10.2307/2533554, Diggle et al (2002) ISBN:9780199676750, and Lu, Luo, and Chen (2008) doi:10.2202/1557-4679.1098.


Documentation


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Insights

Last 30 days

This package has been downloaded 948 times in the last 30 days. This could be a paper that people cite without reading. Reaching the medium popularity echelon is no small feat! The following heatmap shows the distribution of downloads per day. Yesterday, it was downloaded 12 times.

Sun
Mon
Tue
Wed
Thu
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Sat
0 downloadsMar 2, 2025
0 downloadsMar 3, 2025
0 downloadsMar 4, 2025
40 downloadsMar 5, 2025
22 downloadsMar 6, 2025
13 downloadsMar 7, 2025
63 downloadsMar 8, 2025
12 downloadsMar 9, 2025
22 downloadsMar 10, 2025
22 downloadsMar 11, 2025
36 downloadsMar 12, 2025
73 downloadsMar 13, 2025
24 downloadsMar 14, 2025
49 downloadsMar 15, 2025
8 downloadsMar 16, 2025
42 downloadsMar 17, 2025
48 downloadsMar 18, 2025
18 downloadsMar 19, 2025
18 downloadsMar 20, 2025
14 downloadsMar 21, 2025
8 downloadsMar 22, 2025
10 downloadsMar 23, 2025
74 downloadsMar 24, 2025
10 downloadsMar 25, 2025
17 downloadsMar 26, 2025
26 downloadsMar 27, 2025
114 downloadsMar 28, 2025
5 downloadsMar 29, 2025
8 downloadsMar 30, 2025
27 downloadsMar 31, 2025
90 downloadsApr 1, 2025
23 downloadsApr 2, 2025
12 downloadsApr 3, 2025
0 downloadsApr 4, 2025
0 downloadsApr 5, 2025
5
114

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.

Last 365 days

This package has been downloaded 14,968 times in the last 365 days. The academic equivalent of having a dedicated subreddit. There are fans, and maybe even a few trolls! The day with the most downloads was Aug 28, 2024 with 179 downloads.

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.

Data provided by CRAN


Binaries


Dependencies

  • Depends2 packages
  • Suggests4 packages
  • Reverse Imports1 package