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. 2020 Jul 18;20:172. doi: 10.1186/s12871-020-01093-9

Table 2.

Demographic data for both groups

Demographic
data		 Ropivacaine
group		 0,9% saline
group		 P value
No. of patients studied 35 35
Age, median (25th–75th percentilles) in years 76 (69–78) 76 (72–81) 0.0831
Female 15 16 0.8102
Male 20 19
No. of patients smoking 7 6 0.7582
1 – Mann-Whitney U test 2 – χ2test