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. Author manuscript; available in PMC: 2013 Jun 18.
Published in final edited form as: J Physiol Pharmacol. 2011 Apr;62(2):189–195.

Table 3.

Nonparametric trend for the number of antibiotic doses grouped by asthma and respiratory infections recorded at 4-5 years of age.

Antibiotics
(doses)
Asthma Respiratory infections
Z value P level Z-value P level
Penicillins 1,48 0.138 8.23 0.000
Macrolides 4.47 0.000 7.83 0.000
Cephalosporins 3.91 0.000 7.64 0.000
Other 0.63 0.531 3.36 0.001
Total 3.88 0.000 11.12 0.000