Outcome

Group A

(landmark based)

Group B

(USG guided)

P value

First attempt success

148 (64.3)

167 (72.6)

0.057

Needle redirections

1 (0 - 2)

1 (0 - 2)

0.544

Time to dural puncture

25 (17 - 37)

32 (24.7 - 38.25)

0.001

Successful spinal anaesthesia

225 (97.8)

222 (96.5)

0.399