Session 6 · Analyse: from sample to answer
Week 6 · Saturday · online, 19:30–22:30 (3 hours, 15-minute break)
Date: 05/12/2026
Agenda
- Recap quiz on Session 5 (10 min)
- 6.1 From sample to population: CI, p-value, one- or two-sided, power, sample size, choosing a test
- 6.2 Compare groups in the course dataset (live R demo)
- 6.3 Relationships and models: regression, Kaplan-Meier and Cox
- 6.4 Model the course dataset: adjusted OR, Cox HR, missing data, the SAP
- Proposal builder 6: sample size, analysis plan, missing-data plan
Timetable
| Start | Clock* | Min | Segment |
|---|---|---|---|
| 0:00 | 19:30 | 10 | Recap quiz |
| 0:10 | 19:40 | 40 | 6.1 From sample to population: CI, p-values & misinterpretations, one-sided vs two-sided tests, type I/II errors, power, sample size (5-minute live demo), choosing a test (decision table), paired vs unpaired, multiple comparisons |
| 0:50 | 20:20 | 20 | 6.2 [DS] Compare groups in the course dataset: live demo (t-test / Mann-Whitney / chi-square); the class interprets the outputs together (Q1 in full, Q2 to Q5 briefly) |
| 1:10 | 20:40 | 15 | BREAK |
| 1:25 | 20:55 | 35 | 6.3 Relationships and models: correlation, linear and logistic regression, adjustment, reading a regression table, overfitting, censoring and Kaplan-Meier curves (prediction/ML and interaction in the extra slides) |
| 2:00 | 21:30 | 25 | 6.4 [DS] Model the course dataset: the SAP that was written before the analysis, crude vs adjusted OR (confounding by indication made visible), Kaplan-Meier + Cox HR, complete-case vs multiple imputation |
| 2:25 | 21:55 | 30 | Proposal builder 6: modelled live (sample size, analysis plan, confounders, missing-data plan); each participant drafts their own sample-size inputs (finished as homework) |
| 2:55 | 22:25 | 5 | Wrap-up |
*Times are relative to the start of the session; the clock column shows Vietnam time for the online 19:30–22:30 session. All exercises are done by the whole class together (no groups). [DS] = course-dataset content (FLUID-ICU analysis and manuscript writing).
Slides
Press F for full screen, S for speaker notes, E to print, Esc for an overview.
Downloads
| Slides (PowerPoint) | English · Tiếng Việt |
| Exercise sheet | Read online · Word · PDF |
| Solutions | Read online · PDF |
| Live-demo script | Read online · PDF |
Before this session
- The Q1 results pack read (Table 1 and figures).
- Proposal Part 3 started (variables table, mini-CRF, data-management plan).
After this session (homework)
- Your proposal: finish Proposal Part 3 (sample size, analysis plan, missing-data plan).
- Your manuscript: choose one question (Q1 to Q5), tell the course lead, and read its results pack.
- Read Papers 1 and 2.
- Start your 6 proposal slides (presentation guide).
- Homework exercises on the Session 6 sheet (CIs and p-values, choose the test, match r, read a Kaplan–Meier curve, why is it missing?).