Answered: Twenty-two young asthmatic volunteers…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Twenty-two young asthmatic volunteers were studied to assess the short-term effects of sulfur dioxide (SO₂) exposure under various conditions [12]. The baseline data in Table 12.30 were presented regarding bronchial reactivity to SO₂ stratified by lung function (as defined by forced expiratory volume / forced vital capacity [FEV₁/FVC]) at screening.

12.6 Test the hypothesis that there is an overall mean difference in bronchial reactivity among the three lung-function groups.

TABLE 12.30 Relationship of bronchial reactivity
to so, (cm H,O/s) grouped by lung
function at screening among
22 asthmatic volunteers
Lung-function group
Group A
FEV /FVC
Group B
FEV,/FVC
75-84%
Group C
FEV,/FVC
2 85%
S74%
20.8
7.5
9.2
4.1
7.5
2.0
30.0
11.9
2.5
24.7
4.5
6.1
13.8
3.1
7.5
8.0
4.7
28.1
10.3
10.0
5.1
2.2
Source: Based on the American Review of Respiratory Disease, 131(2),
221-225, 1985.

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