Exercises for the anthro dataset - 2010-12-07
How is the gender distribution of the infants in this dataset?
How is the education level of the mothers in this dataset? (MEducCat)
How is the gender distribution in the urban and rural areas of the infants in this dataset?
Is gender associated with living area?
(Two-way table with Chi square. How is the p-value?)
Is socio-economy associated with education?
(SESquintile vs MEducCat)
(Two-way table with Chi square. How is the p-value?)
Plot child height vs. child age for the children graphically. How does it look?
Scatterplot with
AgeInMonths vs. ChildHeight
Plot child weight vs. child age for the children graphically. How does it look?
Scatterplot with
AgeInMonths vs. ChildWeight
Child growth can be presented with ‘height-for-age’, ‘weight-for-age’ and ‘weight-forheight’ z-scores. The expected value is 0, and children who are higher than the expected
height according to their age will have a HAZ above 0, while those who are lower will have a
value below 0. In theory, 95% of a normally fed healthy population of children will have a
value between -2 and 2. Few children will normally have lower or higher value than these.
The values have been calculated already:
How is the haz, waz, whz distribution?
Make data subsets:
AgeInMonths < 6 months
AgeInMonths < 12 months >= 6 months
How is the haz, waz, whz distribution for each of the subsets?
Is the mean haz different in rural and urban areas?
(Means, independent samples t-test with haz vs. livingarea)
Is the mean waz different in rural and urban areas?
(Means, independent samples t-test with waz vs. livingarea)
Is the mean whz different in rural and urban areas?
(Means, independent samples t-test with whz vs. livingarea)
Is HAZ associated with mothers education when adjusting for child age?
Fit model  linear regression
Response: haz
Explanatory variables: AgeInMonths
education
(hold control when
clicking to select more than one)
No need to enter ‘Subset expression’ for this analysis or to change model
name.
Is WAZ associated with mothers education when adjusting for child age?
Repeat model for WAZ
Is WHZ associated with mothers education when adjusting for child age?
Repeat model for WHZ