Table 2.
Comparison of positive rates of PCT, CRP and WBC [n (%)]
| Group | n | PCT | CRP | WBC | Combined diagnosis |
|---|---|---|---|---|---|
| A | 108 | 57 (52.78) | 55 (50.93) | 42 (38.89) | 94 (87.04) |
| B | 116 | 25 (21.55) | 43 (37.07) | 36 (31.03) | 78 (67.24) |
| C | 122 | 29 (23.77) | 42 (34.43) | 34 (27.87) | 78 (63.93) |
| χ2A–B–C | – | 31.00 | 12.07 | 3.32 | 17.44 |
| pA–B–C | – | < 0.001 | 0.002 | 0.190 | < 0.001 |
| χ2A–B | – | 22.50 | 4.364 | 1.52 | 12.26 |
| pA–B | – | < 0.001 | 0.037 | 0.218 | < 0.001 |
| χ2A–C | – | 20.59 | 5.07 | 3.14 | 16.21 |
| pA–C | – | < 0.001 | 0.024 | 0.076 | < 0.001 |
| χ2B–C | – | 0.17 | 19.35 | 0.29 | 0.29 |
| pB–C | – | 0.683 | < 0.001 | 0.592 | 0.592 |
χ2A–B–C represents the χ2-value of chi square test between group A, group B and group C. pA–B–C represents the p-value of chi square test between group A, group B and group C. The same goes for χ2A–B, pA–B; χ2A–C, pA–C; χ2B–C, pB–C