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Table 2 C-reactive protein (CRP) and procalcitonin (PCT) values in the acute and convalescent phases of acute Q fever, scrub typhus, and murine typhus

From: Serum C-reactive protein and procalcitonin values in acute Q fever, scrub typhus, and murine typhus

 Acute Q fever (n = 115)Scrub typhus (n = 55)Murine typhus (n = 19)All (n = 189)p
CRP (mg/L)
 Acute phaseMean ± SD80.6 ± 60.974.2 ± 66.875.0 ± 74.278.2 ± 63.70.824
> 2578.5% (84/107)74.5% (38/51)72.2% (13/18)76.7% (135/176)0.766
> 5068.2% (73/107)58.8% (30/51)50.0% (9/18)63.6% (112/176)0.231
> 7545.8% (49/107)37.3% (19/51)38.9% (7/18)42.6% (75/176)0.564
> 10033.6% (36/107)25.5% (13/51)27.8% (5/18)30.7% (54/176)0.560
> 15011.2% (12/107)9.8% (5/51)11.1% (2/18)10.8% (19/176)1.000
> 2003.7% (4/107)3.9% (2/51)5.6% (1/18)4.0% (7/176)0.853
 Convalescent phaseaMean ± SD8.9 ± 25.77.3 ± 19.24.8 ± 10.68.0 ± 22.40.827
> 254.8% (3/62)11.1% (4/36)8.3% (1/12)7.3% (8/110)0.476
> 504.8% (3/62)8.3% (3/36)0% (0/12)5.5% (6/110)0.702
> 753.2% (2/62)2.8% (1/36)0% (0/12)2.7% (3/110)1.000
> 1001.6% (1/62)0% (0/36)0% (0/12)0.9% (1/110)1.000
PCT (ng/mL)
 Acute phaseMean ± SD1.09 ± 1.400.99 ± 1.460.97 ± 1.221.05 ± 1.400.904
> 0.2575.3% (70/93)63.3% (31/49)61.5% (8/13)70.3% (109/155)0.254
> 0.554.8% (51/93)40.8% (20/49)46.2% (6/13)49.7% (77/155)0.273
> 1.031.2% (29/93)24.5% (12/49)38.5% (5/13)29.7% (46/155)0.545
> 1.521.5% (20/93)22.4% (11/49)15.4% (2/13)21.3% (33/155)0.955
> 2.014.0% (13/93)16.3% (8/49)7.7% (1/13)14.2% (22/155)0.825
> 4.06.5% (6/93)4.1% (2/49)7.7% (1/13)5.8% (9/155)0.764
 Convalescent phaseaMean ± SD0.09 ± 0.130.29 ± 0.980.27 ± 0.730.17 ± 0.600.209
> 0.2514.3% (10/70)13.5% (5/37)16.7% (2/12)14.3% (17/119)1.000
> 0.51.4% (1/70)13.5% (5/37)8.3% (1/12)5.9% (7/119)0.030
> 1.00% (0/70)5.4% (2/37)8.3% (1/12)2.5% (3/119)0.084
> 1.50% (0/70)5.4% (2/37)8.3% (1/12)2.5% (3/119)0.084
> 2.00% (0/70)5.4% (2/37)8.3% (1/12)2.5% (3/119)0.084
  1. SD standard deviation
  2. aTests for the convalescent phase were performed 11–45 days from the disease onset (average, 20.2 ± 5.5 days; median, 19 days)