Bioequivalence and Bioavailability Forum

Doubts about NCSS [Study As­sess­ment]

posted by zizou – Plzeň, Czech Republic, 2016-05-27 01:38 (2884 d 12:15 ago) – Posting: # 16366
Views: 29,135

Dear Helmut.

❝ Since in this post you reported 9.2 degrees of freedom for the intercept and 5.9 for the slope, why do NCSS’ 90% CIs not agree with the other packages (only the PEs)?

According to provided results, there are differences in Standard Errors. So I guess the differences of 90% CIs are due to SEs. You know [Lower Limit,Upper Limit] = PE ∓ SE*t(1-alpha,df). It seems like only SEs differ from other softwares in the right side of equation.

From the post with Compilation of results acc. to PEs NCSS uses REML and acc. to degrees of freedom 9.2 and 5.9 NCSS uses Satterthwaite's method. (if not lucky harmony)

Best regards,
zizou

REML, it's restricted!

Complete thread:

• Dose Proportionality and Variance AngusMcLean 2016-05-11 16:55 
  • More information, please Helmut 2016-05-12 14:34
    • More information, please AngusMcLean 2016-05-13 16:40
      • Setup in Phoenix/WinNonlin Helmut 2016-05-14 02:26
        • Setup in Phoenix/WinNonlin AngusMcLean 2016-05-14 18:54
          • Setup in Phoenix/WinNonlin Helmut 2016-05-15 14:47
            • Setup in Phoenix/WinNonlin AngusMcLean 2016-05-15 15:17
              • Phoenix 64 Warning Helmut 2016-05-15 15:56
                • Phoenix 64 Warning AngusMcLean 2016-05-15 20:11
                  • OT: imperial vs. metric units Helmut 2016-05-16 16:26
              • Setup in Phoenix/WinNonlin ElMaestro 2016-05-15 20:54
                • Setup in Phoenix/WinNonlin AngusMcLean 2016-05-15 22:30
        • Setup in Phoenix/WinNonlin AngusMcLean 2016-05-16 21:00
          • NCSS vs. PHX/WNL vs. SAS Helmut 2016-05-17 01:50
            • NCSS vs. PHX/WNL vs. SAS - Validation? mittyri 2016-05-18 08:23
              • Diagnostics ElMaestro 2016-05-18 09:20
                • Diagnostics: R and Phoenix Helmut 2016-05-18 15:14
                  • Diagnostics: R zizou 2016-05-22 19:07
                    • Diagnostics: R Helmut 2016-05-23 01:22
                      • SASian potpourri d_labes 2016-05-24 12:02
                        • Compilation Helmut 2016-05-24 14:27
                          • REML or not d_labes 2016-05-24 16:33
                            • complete or not Helmut 2016-05-24 16:57
                          • Compilation AngusMcLean 2016-05-26 16:46
                            • doubts about NCSS Helmut 2016-05-26 19:13
                              • Doubts about NCSSzizou 2016-05-26 23:38
                          • Compilation AngusMcLean 2016-05-28 00:51
                            • Kenward-Roger? Helmut 2016-05-28 15:59
                          • 90% confidence interval for R_dnm Shuanghe 2019-01-04 17:45
                            • 90% confidence interval for R_dnm d_labes 2019-01-05 14:01
                              • Visualizing lmer and limits mittyri 2019-01-06 17:00
                                • Visualizing lmer and limits Shuanghe 2019-01-07 11:05
                                • Visualizing lmer and limits d_labes 2019-01-07 15:08
                                  • Visualizing lmer and limits mittyri 2019-01-13 23:53
                              • 90% confidence interval for R_dnm Shuanghe 2019-01-07 10:53
                                • 90% confidence interval for R_dnm d_labes 2019-01-07 15:17
                                  • 90% confidence interval for R_dnm Shuanghe 2019-01-07 17:11
                                    • 90% confidence interval for R_dnm d_labes 2019-01-07 18:24
                                    • offtop: greek letters and tables mittyri 2019-01-08 00:19
                                      • OT: greek letters and symbols Helmut 2019-02-02 16:04
              • Smith’s paper Helmut 2016-05-18 14:44
                • Smith’s paper d_labes 2019-01-05 15:00