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Table 3 Patient results. All values are presented as medians (IQRs) or numbers (%)

From: Cryospray reduces pain during venous cannulation in elective surgery patients: a randomized placebo-controlled study

Total number of patients (N = 128))

Cryospray group (n = 64)

Placebo group (n = 64)

P value

Pain or discomfort with application of the spray (cryo- or placebo) but before vein puncture. Numeric Rating Scale (zero no pain and 10 very painful)

0 (0-2.5)

0 (0–0)

< 0.005

Pain from the puncture site (Numeric Rating Scale) during vein puncture

1 (0–3)

3 (2–5)

< 0.005

Would the patient have the same spray in case of canulation again in the future

   

 Yes

 No

57 (89%)

7 (11%)

34 (53%)

30 (47%)

< 0.005