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| total studied group n = 100 | Test F | P value | |||
| B n = 25 | BF n = 25 | BC n = 25 | BN n = 25 | |||
| Onset of sensory block/sec. |
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| Mean ± SD | 150.40 ± 28.35 | 137.20 ± 29.65 | 134.40 ± 29.73 | 120.00 ± 30.00 | 4.48 | 0.005NS |
| Onset of motor block/sec. |
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| Mean ± SD | 241.20 ± 56.52 | 232.80 ± 61.07 | 234.40 ± 51.57 | 230.40 ± 47.74 | 0.181 | 0.909NS |