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. 2021 Jun 4;21:167. doi: 10.1186/s12871-021-01366-x

Table 1.

Characteristics of the enrolled patients (N = 62)

SPI group (N = 31) Control group (N = 31) P-value
Age (years) 47.1 ± 11.6 48.8 ± 13.4 0.616
Sex (male/female) 16/15 11/20 0.153
Height (cm) 163.0 ± 9.2 164.1 ± 7.2 0.606
Weight (kg) 63.4 ± 11.7 63.2 ± 12.0 0.959
BMI (kg/m2) 23.7 ± 2.8 23.3 ± 3.6 0.657
ASA classification (grade I/II) 15/16 16/15 0.500

Data are expressed as the frequencies or means ± SDs, as appropriate

Abbreviations: BMI body mass index; ASA American Society of Anaesthesiologists