Examining the latent factor structure of a hypothetical cigarette purchase task among pregnant women.

The cigarette purchase task (CPT) is a valid behavioral-economic measure of demand that has smokers estimate hypothetical cigarette consumption under a range of escalating prices. The task involves no experimenter exposure of participants to smoking. CPT demand is measured in terms of five indices: intensity (cigarettes consumed at $0), (largest expenditure), max (price associated with peak expenditure), breakpoint (the first price at which consumption is 0), and elasticity (rate at which consumption changes as a function of increasing price).

Effect of Smartphone-Based Financial Incentives on Peripartum Smoking Among Pregnant Individuals: A Randomized Clinical Trial.

This randomized clinical trial assesses the effect of a smartphone-based intervention with financial incentive on peripartum smoking among pregnant individuals.