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Table 2 Difference in clinical manifestations between pertussis and pertussis - like syndrome

From: Pathogen analysis of pertussis-like syndrome in children

 pertussis-like group
n = 132
B. pertussis group
n = 149
Χ2/tP
age0.68 ± 1.390.84 ± 1.15−1.0580.291
Sex M/F57/7582/673.9330.056
vaccination57 (43.2%)90 (60.4%)8.3210.004
Scheduled vaccination rates55 (66.3%, total 83)87 (78.4%, total 111)3.5520.072
hospital stay (d)9.91 ± 3.7411.37 ± 4.90−2.7780.006
Admission Season    
Spring52 (39.4%)58 (38.9%)6.9410.074
Summer59 (44.7%)56 (37.6%)
Autumn15 (11.4%)15 (10.1%)
Winter6 (4.5%)20 (13.4%)
Clinical criteria
 paroxysmal cough117 (88.6%)133 (89.3%)0.0281.000
 apnea1 (0.8%)0 (0%)1.1330.470
 inspiratory whoop20 (15.2%)16 (10.7%)1.2200.288
 asphyxia1 (0.8%)0 (0%)1.1330.470
 turn red in the face109 (82.6%)118 (79.2%)0.5150.545
 Severe pneumonia3 (2.3%)3 (2.0%)0.0231.000
 post-cough vomiting32 (24.2%)37 (24.8%)0.0131.000
 respiratory failure1 (0.8%)2 (1.3%)0.2271.000
 Paroxysmal cyanosis23 (17.4%)29 (19.5%)0.1930.759
 pertussis encephalopathy0 (0%)0 (0%)
 hyoxemia5 (3.8%)6 (4.0%)0.0111.000
 pulmonary arterial hypertension0 (0%)0 (0%)