Question: Is this describing a (1) directly correlative relationship, (2) conditionally causative relationship, (3) causative relationship, or (0) no relationship.

These results suggest that a proportion of selective eaters continue from childhood into adulthood with similar eating patterns; new onset selective eating occurs in adolescence or young adulthood; and selective and non-selective  eaters at age 23 do not differ with regard to weight or eating psychopathology.
user
This is a conditionally causative relationship
assistant