Table II.
Average values of the haematological parameters of the donors in groups I and II and the difference at two time points
| Variable | Group (n=35 in I, n=63 in II) | Mean±SD | Difference median (minimum, maximum) | P$ | |
|---|---|---|---|---|---|
| Pre-1st donation | Pre-2nd donation | ||||
| Hb (g/dl) | I | 14.92±1.14 | 14.93±1.00 | 0 (−1.70, 2) | 0.960 |
| II | 15.18±1.09 | 15.05±1.09 | 0.19 (−2.79, 2.50) | 0.275 | |
| P# | 0.287 | 0.600 | 0.142 | ||
| RBC (/μl) | I | 4.91±0.36 | 4.89±0.39 | −0.01 (−0.62, 0.36) | 0.910 |
| II | 5.11±0.46 | 5.09±0.44 | 0.06 (−1, 0.92) | 0.713 | |
| P# | 0.023 | 0.027 | 0.625 | ||
| HCT (%) | I | 44.18±2.58 | 44.05±3.04 | −0.09 (−5.79, 4.69) | 0.895 |
| II | 44.73±3.53 | 44.24±5.97 | −0.19 (−9.59, 32.98) | 0.450 | |
| P# | 0.418 | 0.865 | 0.847 | ||
| MCV (fl) | I | 90.34±5.95 | 90.16±5.70 | 0 (−4.70, 8.59) | 0.727 |
| II | 87.83±6.74 | 87.95±6.60 | 0 (−7.40, 7.90) | 0.737 | |
| P# | 0.075 | 0.100 | 0.824 | ||
| MCH (pg) | I | 30.55±2.46 | 30.59±2.29 | 0 (−3.1, 2) | 0.810 |
| II | 29.73±3.29 | 29.35±3.15 | 0.19 (−1.59, 3.90) | 0.008 | |
| P# | 0.207 | 0.045 | 0.261 | ||
| MCHC (g/dl) | I | 33.81±1.52 | 33.95±1.92 | −0.20 (−6.29, 3.39) | 0.604 |
| II | 34.19±1.48 | 33.68±1.34 | 0.5 (−4.20, 5.69) | 0.080 | |
| P# | 0.234 | 0.432 | 0.151 | ||
| RDW (fl) | I | 14.20±1.52 | 14.15±1.38 | 0 (−1.79, 2.70) | 0.346 |
| II | 14±1.25 | 13.86±1.34 | 0.09 (−1.5, 2) | 0.226 | |
| P# | 0.489 | 0.331 | 0.976 | ||
| TLC (/μl) | I | 7.63±1.57 | 7.64±1.42 | 0.05 (−2.6, 4.62) | 0.948 |
| II | 7.34±1.53 | 7.38±1.61 | 0.15 (−4.76, 3.02) | 0.957 | |
| P# | 0.374 | 0.436 | 0.528 | ||
| TPC (/μl) | I | 234.2±53.66 | 220.66±54.35 | 18 (−81, 119) | 0.094 |
| II | 247.24±58.16 | 255.02±56.20 | −10 (−150, 138) | 0.201 | |
| P# | 0.277 | 0.004 | 0.025 | ||
| PCT (%) | I | 0.22±0.05 | 0.20±0.04 | 0.02 (−0.06, 0.14) | 0.034 |
| II | 0.23±0.05 | 0.22±0.06 | 0 (−0.12, 0.11) | 0.810 | |
| P# | 0.457 | 0.086 | 0.150 | ||
| MPV (fl) | I | 10.06±1.49 | 9.46±2.05 | 0.50 (−3.59, 5.2) | 0.079 |
| II | 9.64±9.64 | 9.07±1.92 | 0.39 (−4.59, 4.5) | 0.156 | |
| P# | 0.888 | 0.366 | 0.707 | ||
| PDW (fl) | I | 15.14±2.37 | 15.80±1.80 | −0.39 (−6, 4.09) | 0.202 |
| II | 15.68±1.77 | 15.86±2.09 | −0.04 (−4.4, 6.5) | 0.617 | |
| P# | 0.229 | 0.884 | 0.463 | ||
#P denotes the comparison between two groups calculated by independent t test; $P denotes the comparison within the groups assessed by paired t test