Pelvic girdle pain and relevance of ASLR testing: A ... - Cindy Verheul
Pelvic girdle pain and relevance of ASLR testing: A ... - Cindy Verheul
Pelvic girdle pain and relevance of ASLR testing: A ... - Cindy Verheul
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The columns contain the following information relating to:<br />
Time after the birth at the time <strong>of</strong> the study<br />
The age <strong>of</strong> the woman at the time <strong>of</strong> examination<br />
The BMI at the time <strong>of</strong> inquiry<br />
The total score on the Dallas Pain Questionnaire.<br />
In the last two columns, I have differentiated the score on the Dallas Pain Questionnaire in a<br />
score on the physical activity (item I-X) <strong>and</strong> a score on emotional capacities (item XI-XVI).<br />
4.5 Statistics<br />
Descriptive statistics<br />
The data obtained will be analysed with a statistical analysis program called SPSS version<br />
17. In order to underst<strong>and</strong> the data some preliminary analysis is performed. By doing<br />
descriptive statistics one can describe the characteristics <strong>of</strong> the sample <strong>and</strong> check the<br />
variables for any violation <strong>of</strong> the assumptions underlying the statistical techniques that are<br />
used to address the research questions. The kind <strong>of</strong> descriptive analysis that can be<br />
performed depends on the type <strong>of</strong> data that has been obtained. To obtain descriptive<br />
statistics for categorical data a frequency distribution should be made, which will indicate the<br />
number <strong>of</strong> responses associated with each value <strong>of</strong> a variable as well as the relative<br />
occurrence <strong>of</strong> different values <strong>of</strong> the variable expressed in percentages. A frequency<br />
distribution also helps to establish the number <strong>of</strong> non-response or illegitimate answers.<br />
Moreover, with the help <strong>of</strong> frequency data a histogram can be constructed with which one<br />
could examine the data is consistent with the expected normal distribution. To obtain<br />
descriptive statistics for continuous variables one can construct a descriptive table with the<br />
minimum, maximum, mean <strong>and</strong> st<strong>and</strong>ard deviation <strong>of</strong> the different variables.<br />
T-test<br />
After the data has been explored the research tries to prove the different hypotheses. The<br />
statistics that can be used to find out whether there is a statistically significant difference<br />
among a number <strong>of</strong> groups, is a t-test. This analysiscompares the mean score got each<br />
group on one or more dependent variables. T-test are used when you have two groups <strong>and</strong><br />
you wish to compare the mean score on some continuous variable. There are more types <strong>of</strong><br />
t-tests. In this research an independent sample t-test has been used. This kind <strong>of</strong> t-test is<br />
Osteopathie Schule Deutschl<strong>and</strong><br />
Dresden International University Page 44
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