Table 2 Comparison of positive rates of PCT, CRP and WBC [n (%)]

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)

χ²_A–_B–_C

–

31.00

12.07

3.32

17.44

p_A–_B–_C

–

 < 0.001

0.002

0.190

 < 0.001

χ²_A–_B

–

22.50

4.364

1.52

12.26

p_A–_B

–

 < 0.001

0.037

0.218

 < 0.001

χ²_A–_C

–

20.59

5.07

3.14

16.21

p_A–_C

–

 < 0.001

0.024

0.076

 < 0.001

χ²_B–_C

–

0.17

19.35

0.29

0.29

p_B–_C

–

0.683

 < 0.001

0.592

0.592