Variable Group 1 Cut point (n=150) Group 2 Pencil point  (n=150)
Age (years) 43.54 (16.43) 40.51 (15.13)
Weight (kg) 74.14 (14.98) 70.40 (11.87)
Height (cm) 170.13 (8.19) 168.67 (6.89)
Gender (M/F) 105/45 98/52
ASA (1/2) 87/63 85/65
Table 1: Demographic data: mean (sd).