Evidence based medicine research helper

Multiple Groups: The KM curve should show the survival outcomes for at least two different groups (e.g., treatment vs. control).
Provide the "Number at risk" information. This shows the number of individuals at risk of the outcome at different follow-up time points.
Alternatively, provide the total number of individuals in each group.

When downloading literature, save the original PDF format if possible. Take screenshots of the survival curves from the literature, ensuring the images are of sufficient clarity.
If the saved image lacks clarity, import it into Adobe Photoshop for adjustments such as desaturation, sharpening, and adjusting the tone curve.

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Required Files:

Survival curve data in CSV format.Special Note: It is recommended to use simple labels like A and B for group variables rather than special characters to avoid connection errors on the website.
Scenario 1: Number at risk data for each group and corresponding time (high precision).
Scenario 2: Total number of individuals in each group (low precision).
Optional Parameter: Number of events occurring in each group.

Reconstrunction tools:

1. uisng the online tool to calculate: https://www.trialdesign.org/one-page-shell.html#IPDfromKM
2. uisng the R statistical software to calculate: IPDfromKM Package

Auxiliary tool for online tool abov:.

log(HR)

Standard error

Confidence level

Result HR

Confidence interval Lower Limit Upper limit

Step 1: Save a Screenshot of the Kaplan-Meier (KM) Curve from the Literature