Table 1 Design options for studies of occupational exposures and categories of health outcomes.

Health outcome	Example	Study design options*
Chronic disease (rare)	Stomach cancer	1. Historical cohort (incl. nested case‐control)
		2. Community‐based case‐control
		3. Prospective cohort
Chronic disease (not rare)	Asthma onset (not asthma attack or exacerbation)	1. Prospective (inception) cohort
		2. Case‐control
		3. Historical cohort
Acute fatal	Injury	1. Historical cohort
		2. Case‐crossover
		3. Nested case‐control
Acute non‐fatal	Neurological symptoms	1. Case‐crossover
		2. Cross‐sectional

*Listed in descending priority order.