1.

Detailed hospital characteristics.

1.

Detailed surgical procedures.

1.

Distribution of hospital uncorrected (non-parametric) DEA scores in proportion to the percentage of severe complications (output).

1.

Descriptive data on population level.

1.

Hospital characteristics representing input and output for DEA score.

1.

Results of truncated regression analysis.

1.

Classification of resilience factors: Top 3 resilience factors (t1); which ones have become more or less important or changed in nature due to the pandemic (t2); which ones entail...

1.

Supporting information I–materials.

1.

Supporting information II–results.

1.

Supporting information III–codebook.