Exploratory part
REGRESSION
The attempt to construct a new index using the outcome When combining the 15 candidate variables into one parsimonious index, seven variables were selected based on the variable selection in the lasso technique, with weights shown in Table The weights given to the candidate variables in a new parsimonious index“Weight” refers to the regression coefficients when using the standardized variables as input. “Effect” refers to the regression coefficients when using the unstandardized variables as inputMean GPE-change stratified by treatment group and the new index categorized into four groups. The values of the index refer to the predicted difference in GPE comparing chiropractic manipulation with sham manipulation. (red = chiropractic care; blue = control group)