TABLE 2.

Pain severity

Timepoint	Standard care	ERAS	P-value
NRS 0	5 (4.00–5.75)	3 (2.0–4.5)	0.0001
NRS 6	4 (3.00–5.00)	2.5 (2.0–4.0)	0.004
NRS 12	4 (3.00–4.25)	3 (2.0–3.5)	0.01
NRS 18	3 (2.00–4.00)	2 (0–3.0)	0.001
NRS 24	3 (1.50–4.00)	0 (0–1.5)	0.000002

The table presents pain intensity evaluated using the numerical rating scale (NRS) where 0 = no pain, 10 = worst imaginable pain. The first assessment was done immediately after the patients’ extubation when the PCA was started.

The NRS was shown as medians and interquartile ranges. Probability was calculated with the Mann-Whitney U test.

ERAS – Enhanced Recovery After Surgery, NRS – numerical rating scale