Table is from a longitudinal study of coronary risk factors in schoolchildren(Woolson and Clarke 1984). A sample of children aged 11-13 in 1977 were classified by gender and by relative weight (obese, not obese.)in 1977, 1979, and 1981. Analyze these data.
TABLE Data for Problem
|
Gender
|
|
|
|
Responsesa
|
|
|
|
|
NNN
|
NNO
|
NON
|
NOO ONN
|
ONO
|
OON
|
OOO
|
|
Male
|
119
|
7
|
8
|
3
|
13
|
4
|
11
|
16
|
|
Female
|
129
|
8
|
7
|
9
|
6
|
2
|
7
|
14
|
1. Complete a preliminary analysis of the data
2. Determine the inter-rater reliability for both males and females comparing the first two time periods and comment.
3. Is there a difference in the proportion considered obese in the first to second time period for both males and females?
4. Is there a difference in the proportion considered not obese in the second to third time periods for both males and females?
5. Is the information that you have in parts c and d enough to draw conclusions about the time variable? Explain your answer.