PHQ9	Patient Health Questionnaire 9
FFW	fitness for work
MDD	major depressive disorder
WA	working ability
OH	occupational health
OP	occupational physician
METs	metabolic equivalents
HPQ	Health and Performance Questionnaire
WPAI	Work Productivity and Activity Impairment
QIDS-SR	Quick Inventory of Depressive Symptomatology Self-Report
GHQ-12	12-item General Health Questionnaire
LTSA	Long-Term Sickness Absence
WLQ	Work Limitation Questionnaire
WMH-CDI	World Mental Health Composite International Diagnostic Interview
SPS-6	Stanford Presenteeism Scale no. 6