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Table 1 Demographics and clinical characteristics of patients with invasive SA infections

From: Clinical and molecular characteristics of invasive community-acquired Staphylococcus aureusinfections in Chinese children

Characteristics Total No. (%) MRSA No. (%) MSSA No. (%) P
Patients 163 71 (43.6) 92 (56.4) 1.0
Gender     
Male 99 (60.7) 37 (52.1) 62 (67.4) 0.048
Female 64 (39.3) 34 (47.9) 30 (32.6)  
Age-Median (month, IQRa) 6 (35.23) 8 (35.33) 6 (32.75) 0.397
 <=1 mo 51 (31.3) 20 (28.1) 31 (33.7) 0.451
1 mo–1 yr 54 (33.1) 26 (36.6) 28 (30.4) 0.593
1 yr–3 yr 25 (15.3) 15 (21.2) 10 (10.9) 0.072
3 yr–14 yr 33 (20.3) 10 (14.1) 23 (25) 0.086
Area     
Rural 90 (55.2) 38 (53.5) 52 (56.5) 0.702
Urban 73 (44.8) 33 (46.5) 40 (43.5)  
Risk factors b: 33 (20.2) 23 (32.4) 10 (10.9) 0.001
history in the past 1 yr of     
 Hospitalization 21 16 5 0.001
 Surgery 6 3 3 0.336
 Trauma or scalds 3 1 2 0.212
 Endotracheal intubation 4 3 1 1.0
Congenital heart disease 4 2 2 0.567
Other congenital diseasesc 3 2 1 1.00
Presenting symptoms     
 Fever 134 (82.2) 60 (84.5) 74 (80.4) 0.5
 Hypothermia 4 (2.5) 2 (2.8) 2 (2.2) 1.00
 Fever days-Median (IQR) 5.5 (7) 6.5 (7) 5 (6) 0.76
 Shock 4 (2.5) 2 (2.8) 2 (2.2) 1.00
 Coma 2 (1.2) 1 (1.4) 1 (1.1) 1.00
Laboratory examination     
White cell count-Median (109/L IQR) 17.35 (8.47) 18.71 (9.41) 16.41 (9.52) 0.72
Neutrophil count-Median (IQR) 10.46 (7.37) 11.58 (6.44) 10.74 (7.18) 0.81
Thrombocytopenia (<100 × 109/L) 12 (7.4) 5 (7) 7 (7.6) 0.89
C-reactive protein-Median (mg/L, IQR) 47.9 (19.5) 46.7 (21.3) 48.5 (19.3) 0.92
PRISM score Median (IQR) 2 (6) 2 (6) 2 (6) 0.48
Hospitalization     
hospital days-median (IQR) 15 (7) 17 (8) 14.5 (7) 0.168
Intensive care unit (ICU) admission 76 (46.6) 34 (47.9) 42 (45.7) 0.777
ICU days-Median (IQR) 9 (4) 8 (5) 9.5 (4) 0.786
  1. Notes: MRSA: methicillin-resistant S. aureus; MSSA: methicillin-susceptible S. aureus; PRISM: pediatric risk of mortality.
  2. aInterquartile range.
  3. bNot mutually exclusive.
  4. cOne MRSA case each of congenital immunodeficiency and congenital laryngeal cyst and one MSSA case of thalassemia.