Table 1. Comparison of the sensory block characteristics between Group L and Group R.

When all parameters of the sensory block of the two study groups were compared, the results were in favour of Group L with a statistically significant difference in all parameters.

Group L: levobupivacaine group; Group R: ropivacaine group

Sensory block characteristics	Group L (n=33)	Group R (n=33)	P-value
Time taken for the onset of sensory block (in min)	3.6±0.72	4.2±1.0	0.002
Time taken for the sensory block to reach T12 (in min)	5.1±0.80	6.7±0.25	0.04
Time taken to peak sensory block (in min)	6.60±0.40	7.45±0.82	0.0005
Time taken by sensory block to regress by 2 levels	130.0±8.3	110.0±7.9	0.0001
Mean duration of sensory block (in min)	162.5±21.4	150.7±42.8	0.0002