| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T53 |
0-20 |
Sentence |
denotes |
Statistical analysis |
| T54 |
21-168 |
Sentence |
denotes |
Prior to the analysis of relationships between variables, descriptive analyses of the different areas that make up the study have been carried out. |
| T55 |
169-342 |
Sentence |
denotes |
These descriptive analyses include percentage distributions of the different categories of the analysed variables and, in the case of quantitative variables, average and SD. |
| T56 |
343-665 |
Sentence |
denotes |
These same analyses, shown as a cross between variables by means of contingency tables or comparison of averages, have also been elaborated as a preamble to the statistical tests that have been carried out to corroborate if there is a relationship between different variables, thus showing the hypotheses to be contrasted. |
| T57 |
666-773 |
Sentence |
denotes |
Depending on the nature of the variable and the distribution of the sample, different tests have been used. |
| T58 |
774-925 |
Sentence |
denotes |
We used the Χ2 test to contrast whether there is independence between two categorical variables using a contingency table when the data are not paired. |
| T59 |
926-1207 |
Sentence |
denotes |
For the analysis of the predictive factors with the appearance of a ‘de novo’ headache, we used binary logistic regression methods by steps backwards, to maximise sensitivity; variables with a univariate association of p<0.200 were included as candidates in the multivariate model. |
| T60 |
1208-1427 |
Sentence |
denotes |
To measure the relationship between the different variables in the study, statistical tests with a 95% significance level were used as an acceptance threshold for the hypotheses to be tested, that is, a p value of 0.05. |
| T61 |
1428-1530 |
Sentence |
denotes |
All statistical analyses were performed using the SPSS V.25.0 statistical package program for Windows. |
