Description

Rusconi et al developed an equation for determining the distribution of respiratory rates in children from 0 to 3 years of age. The authors are from the University of Milano in Italy.


 

For an awake child, the 95th percentile for the respiratory rate is:

 

respiratory rate at 95th percentile =

= 10 ^ (1.82144 - (0.0125995 * (age in months)) + (0.00013401 * ((age in months)^2)))

 

For an asleep child, the 95th percentile for the respiratory rate is:

 

respiratory rate at 95th percentile =

= 10 ^ (1.72858 - (0.0139928 * (age in months)) + (0.00017646 * ((age in months)^2)))

 

The general equation for the exponent at a given percentile in the awake child is:

 

respiratory rate at Yth percentile =

= 10 ^ X

 

X =

= (1.6801 + (0.08592 * Z)) - ((0.01189 + (0.0004301 * Z)) * (age in months)) + (0.00013401 * ((age in months)^2)))

 

The general equation for the exponent at a given percentile in the asleep child is:

 

respiratory rate at Yth percentile =

= 10 ^ X

 

X =

= (1.5773 + (0.09196 * Z)) - ((0.01314 + (0.0005155 * Z)) * (age in months)) + (0.00017646 * ((age in months)^2)))

 

where:

Yth Percentile

Value for Z

5

-1.65

10

-1.282

25

-0.675

50

0

75

0.675

90

1.282

95

1.645

97.5

1.960

99

2.326

 


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