Table 2 Suppl.
PBF and DGF of syringe and needle combinations
| Syringe | Needle | PBF (N) | DGF (N) | |||
|---|---|---|---|---|---|---|
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| No | Length (mm) | Mean (SD) | 95%CI | Mean (SD) | 95%CI | |
| 1 mL | ORI | 13 | 1.15 (0.22) | [0.61–1.68] | 0.13 (0.05) | [0.00–0.25] |
| 27GN | 13 | 0.87 (0.21) | [0.35–1.38] | 0.31 (0.00) | [0.31–0.31] | |
| 27GSN | 88 | 0.75 (0.087) | [0.53–0.97] | 0.36 (0.10) | [0.34–0.39] | |
| 30GN | 13 | 0.79 (0.10) | [0.54–1.04] | 0.71(0.06) | [0.55–0.87] | |
| 3 mL | ORI | 32 | 1.95 (0.13) | [1.62–2.28] | 1.33 (0.153) | [0.75–1.51] |
| 27GN | 13 | 2.60 (0.54) | [1.27–3.93] | 3.04 (0.43) | [2.94–3.15] | |
| 27GSN | 88 | 4.37 (0.058) | [4.22–4.5101] | 4.56 (0.05) | [4.44–4.67] | |
| 30GN | 13 | 4.83 (0.59) | [3.37–6.30] | 11.48 (0.45) | [10.36–12.60] | |
| 5 mL | ORI | 38 | 2.33 (0.29) | [1.60–3.05] | 1.83 (0.056) | [1.70–1.97] |
| 27GN | 13 | 10.42 (0.52) | [9.12–11.71] | 13.50 (0.00) | [13.50–13.50] | |
| 27GSN | 88 | 10.56 (0.96) | [8.17–12.95] | 19.50 (0.00) | [19.50–19.50] | |
| 30GN | 13 | 12.47 (0.99) | [10.02–14.92] | 58.53 (0.46) | [57.39–59.68] | |
| 10 mL | ORI | 38 | 3.27 (0.32) | [2.47–4.07] | 1.88 (0.48) | [0.70–3.06] |
| 27GN | 13 | 4.73 (0.46) | [3.59–5.88] | 36.24 (0.58) | [34.80–37.67] | |
| 27GSN | 88 | 4.33 (0.58) | [2.90–5.77] | 42.89 (0.77) | [40.98–44.79] | |
| 30GN | 13 | 46.07 (20.15) | [−4.00–96.13] | 177.83 (3.26) | [169.73–185.94] | |
| 20 mL | 27GN | 13 | 28.33 (1.44) | [24.75–31.92] | 134.53 (0.61) | [133.02–136.05] |
| 27GSN | 88 | 25.33 (0.58) | [23.90–26.77] | 113.27 (1.55) | [109.41–117.13] | |
| 30GN | 13 | N/A | – | N/A | – | |
DGF (dynamic gliding force), N (Newtons), ORI (original needle from packaging of the syringe), PBF (plunger-stopper break-loose force), 27GN (27 Gauge needle), 27GSN (27 Gauge spinal needle), 30GN (30 Gauge needle)