Patient selection: pediatric patient with asthma
Outcome: hospitalization
Parameters:
(1) oxygen saturation by pulse oximetry in percent
(2) respiratory rate in breaths per minute
(3) history of pneumonia
(4) asthma-related ED visit in the past 12 months
|
Parameter
|
Finding
|
Odds Ratio
|
|
oxygen saturation
|
>= 94%
|
1
|
|
|
< 94%
|
3.6
|
|
respiratory rate
|
<= 31 breaths per minute
|
1
|
|
|
> 31 breaths per minute
|
2.8
|
|
pneumonia history
|
negative
|
1
|
|
|
positive
|
2.8
|
|
asthma-related ED visit
|
no
|
1
|
|
|
yes
|
1.6
|
cumulative product of odds ratios =
= PRODUCT(all 4 odds ratios)
Interpretation:
• minimum cumulative product: 1
• maximum cumulative product: 44.9 in paper, 45.16 in spreadsheet
Additional predictors of hospital admission"
(1) family history of asthma
(2) inhaled anti-inflamamtory inhalers non-adherence
(3) SABA (short-acting beta agonist) overuse
(4) history of food allergies
