Table 1.

Elements captured within each determinant category (see online supplemental table 3 for full list)

Determinant	Elements captured
Demographics	Age; Gender; Country; Language; Educational attainment, Employment status
Lifestyle	Frequency of sleeping well; Frequency of exercise, Frequency of in-person socialising with friends
Traumas and adversities	Experience of sexual abuse; Cyberbullying; Divorce; Breakdown of romantic relationships; Sudden or premature death of a family member; Extreme poverty and homelessness; Loss of a job; Debilitating or life-threatening injury; Loss due to natural disaster; Participant or witness to war
Substances used	Tobacco; Alcohol; Cannabis; Vaping products; Sedatives or sleeping pills; Amphetamines; Opioids
Medical conditions	31 common medical conditions including diabetes (type II), cancer, heart disease, hypertension, arthritis, migraine and traumatic brain injury