Figure 1.
Flow diagram of study selection and exclusion.
Figure 2.
Risk of bias in included studies.
Figure 3.
Meta-analysis of financial incentives for smoking cessation (follow-up ≤six months).
Figure 4.
Meta-regression of follow-up period on relative risk, smoking cessation (follow-up <six months).
Figure 5.
Meta-regression of incentive value on relative risk, smoking cessation (follow-up up <six months).
Figure 6.
Meta-analysis of financial incentives for smoking cessation (follow-up >six months).
Figure 7.
Meta-regression of follow-up period on relative risk, smoking cessation (follow-up >six months).
Figure 8.
Meta-regression of incentive value on relative risk, smoking cessation (follow-up of >six months).
Figure 9.
Contour enhanced funnel plot, smoking cessation (follow-up ≤six months).
Figure 10.
Contour enhanced funnel plot, smoking cessation (follow-up >six months).
Figure 11.
Meta-analysis of financial incentives for attendance at vaccination and screening.
Figure 12.
Meta-regression of incentive value on relative risk, attendance at vaccination & screening.
Figure 13.
Contour enhanced funnel plot, attendance at vaccination and screening.
Figure 14.
Meta-analysis of financial incentives for all behaviours (latest follow-up point).
Figure 15.
Meta-regression of follow-up point on relative risk, all behaviours (latest follow-up point).
Figure 16.
Meta-regression of incentive value on relative risk, all behaviours (latest follow-up point).
Figure 17.
Contour enhanced funnel plot, all behaviours (latest follow-up point).