Work in progress
Text within a questionnaire becomes a statement when it does not fulfill the criteria of becoming any of the other elements and do not provide any context to be part of the question literal. Statements can be used for questions and sequences. Statements are control constructs like sequences, conditions and question components. Constructs are concerned with positioning items within a questionnaire. Statements need to refer back to a question or a sequence to provide them with unique labels. This helps to understand their position within the questionnaire. Statements are labelled with the prefix ‘s_intro_…’. If there is a statement connected to a section then it always needs to be numbered even if there is only one, see second example from ALSPAC below. Statements are different from instructions. There are places where an instruction becomes a statement because there is more than one instruction and only one can be input as an instruction, see example from NSHD below.
...