Table 4.
p value comparisons for overall sample and stratified by time to the reference instrument (Coulter LH750).
| Instrument | Pre-Pump (n = 10) | On-Pump (n = 52) | Post-Pump (n = 6) | Cumulative (n = 68) |
|---|---|---|---|---|
| Gem 3000 | 0.0003 | 0.0000 | 0.0001 | 0.0000 |
| ABL 720 | 0.0432 | 0.0000 | 0.0250 | 0.0000 |
| ABL 77 | 0.1105 | 0.0000 | 0.1077 | 0.0000 |
| Rapidpoint 405 | 0.3994 | 0.8015 | 0.8220 | 0.9530 |
| IL 682 | 0.0000 | 0.0012 | 0.4650 | 0.0000 |
| GemOPL | 0.0002 | 0.0000 | 0.0014 | 0.0000 |
| Hb 201+ | 0.1513 | 0.0665 | 0.6123 | 0.0871 |
| Manual | 0.0161 | 0.0000 | 0.0063 | 0.0000 |
p < .05 was considered to be statistically significant (paired t test analysis); n: sample size for each stratified time.