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Measurements of resistance through the needle in Cannula P and I
| Cannula P | Cannula I | Difference | p-value | |
|---|---|---|---|---|
| 22G resistance; mmHg.L-1.hr-1 |
728 (3.7) |
421 (3.6) |
307 [289 to 325] |
2 × 10-14 |
| 20G resistance; mmHg.L-1.hr-1 |
287 (6.3) |
152 (3.1) |
135 [125 to 144] |
3 × 10-10 |
| 18G resistance; mmHg.L-1.hr-1 | 71 (2.4) | 44 (4.7) | 27 [26 to 28] | 1 × 10-16 |
Values are mean with (relative standard deviation %) or [95% confidence interval].
