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

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
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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.
12.7 Compare the means of each pair of groups using the LSD method.
12.8 Compare the means of each pair of groups using the Bonferroni method.

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
<74%
Group B
FEV,/FVC
Group C
FEV,/FVC
2 85%
75-84%
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
Transcribed Image Text: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 <74% Group B FEV,/FVC Group C FEV,/FVC 2 85% 75-84% 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
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