Table 1.

Search terms

‘time preference’ smoking

‘time preferences’ smoking

‘time-preference’ smoking

‘time-preferences’ smoking

delay discount smoking

delay discounting smoking

delay-discount smoking

delay-discounting smoking

discount rate smoking

inter temporal smoking

inter-temporal smoking

intertemporal smoking

time discount smoking

time discounting smoking

time-discount smoking

time-discounting smoking

‘time preference’ tobacco

‘time preferences’ tobacco

‘time-preference’ tobacco

delay discount tobacco

delay discounting tobacco

delay-discount tobacco

delay-discounting tobacco

discount rate tobacco

inter temporal tobacco

inter-temporal tobacco

intertemporal tobacco

time discount tobacco

time discounting tobacco

time-discount tobacco

time-discounting tobacco