Pre-hospital antibiotic treatment and mortality caused by invasive meningococcal disease, adjusting for indication bias

Table 5 Mean values of the variables included in the matching process, before and after the latter was performed.

Variable	Mean value (treated patients) before matching	Mean value (non-treated patients) before matching	Mean value (treated patients) after matching	Mean value (non-treated patients) after matching
Age (years)	9.6	10.2	9.6	9.5
Fever	0.05	0.04	0.04	0.04
Nausea/Vomiting	0.54	0.62	0.54	0.55
Petechiae	0.16	0.25	0.16	0.16
Headache	0.88	0.86	0.88	0.88
Reduced LC	0.59	0.86	0.59	0.58
Cold-like symptoms	0.97	0.92	0.96	0.96
Pharyngoamygdalitis	0.83	0.86	0.83	0.80
Arthralgia	0.70	0.92	0.70	0.78
Neck stiffness	0.87	0.93	0.86	0.84
Irritability	0.96	0.95	0.96	0.95
Convulsions	0.55	0.47	0.55	0.56
STI (hours)	38.55	26.62	38.5	35.8

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