Study group | Mean | 95% CI | Estimated difference | 95% CI | ||
---|---|---|---|---|---|---|
Lower limit | Upper limit | Lower limit | Upper limit | |||
Hb (mmol/L) | Â | Â | Â | Â | Â | Â |
 Control | 5.89 | 5.43 | 6.36 | Refa |  |  |
 Needle | 7.33 | 7.17 | 7.47 | 1.43 | 1.06 | 1.81 |
 Needle-free | 7.28 | 7.00 | 7.55 | 1.38 | 1.01 | 1.75 |
Ht (vol%) | Â | Â | Â | Â | Â | Â |
 Control | 0.32 | 0.30 | 0.34 | Refa |  |  |
 Needle | 0.38 | 0.37 | 0.39 | 0.06 | 0.04 | 0.08 |
 Needle-free | 0.37 | 0.36 | 0.39 | 0.05 | 0.03 | 0.07 |
Body weight (kg) | Â | Â | Â | Â | Â | Â |
 Control (C) | 7.86 | 7.13 | 8.58 | Refa |  |  |
 Needle (N) | 7.92 | 7.41 | 8.42 | 0.06 |  − 0.58 | 0.71 |
 Needle-free (NF) | 7.54 | 7.00 | 8.08 |  − 0.33 |  − 0.98 | 0.32 |