Table 3.

The R-squared values of height, weight, BMI, and combined height and weight

Vertebral level and oblique angle	Height (cm)	Weight (kg)	BMI (kg/m2)	Height and weight
Bilateral L5 TFEI at 15°	0.029	0.202	0.174	0.218
Bilateral L5 TFEI at 20°	0.024	0.199	0.179	0.218
Bilateral L5 TFEI at 25°	0.020	0.190	0.179	0.213
Bilateral L4 TFEI at 15°	0.025	0.234	0.220	0.260
Bilateral L4 TFEI at 20°	0.025	0.227	0.212	0.253
Bilateral L4 TFEI at 25°	0.023	0.223	0.211	0.251

TFEI: transforaminal epidural injection, BMI: body mass index.