Predictions of the Length of Lumbar Puncture Needles

Table 2

Demographic information of data.

		Men	Women	Mean difference
Age	58.00 (14.69)	57.37 (14.58)	58.69 (14.82)	−1.32
Height (cm)	161.80 (8.44)	167.06 (6.58)	156.04 (6.21)	11.01*
Weight (kg)	66.20 (12.72)	71.32 (12.93)	60.58 (9.79)	10.74*
L4-L5
Minimal depths	5.54 (1.04)	5.54 (1.03)	5.53 (1.06)	0.01
Median	6.07 (1.03)	6.08 (1.01)	6.06 (1.04)	0.03
Maximal depths	6.60 (1.03)	6.62 (1.02)	6.58 (1.05)	0.04
L3-L4
Minimal depths	5.30 (0.98)	5.38 (0.97)	5.22 (0.98)	0.16
Median	5.83 (0.95)	5.90 (0.94)	5.74 (0.95)	0.16
Maximal depths	6.35 (0.94)	6.42 (0.93)	6.26 (0.94)	0.16

Values in table: mean (standard deviation); value less than 0.05.