Pictorial Warning Labels, Numeracy, and Memory for Numeric Cigarette Health-risk Information Over Time

The Ohio State University

Status: Completed

Conditions: Smoking, Cigarette; Smoking Cessation

Treatments: Behavioral: low-emot PWL; Behavioral: immed posttest; Behavioral: delay posttest; Behavioral: high-emot PWL; Behavioral: text-only PWL

Study type: Interventional

Funder types: Other

Identifiers

NCT03501472

P50CA180908A2b

P50CA180908 (U.S. NIH Grant/Contract)

Details and patient eligibility

About

Pictorial cigarette warning labels (PWLs) are thought to increase risk knowledge, but experimental research has not examined PWLs' longer term effects on memory for health risks, or for numeric risks (e.g., percentage risk for developing lung cancer). This trial tests memory for numeric health risks immediately or after a six-week delay for US adult smokers. In addition, the trial tests the effects of different warning label components (e.g., whether the numeric risks are percentage or frequency), participants' level of numeric ability, and the consequences of memory for numeric risks on participant risk perceptions and quit intentions.

Enrollment: 866 patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• at least 18 years old
• have smoked 100+ lifetime cigarettes
• currently smoke "every day" or "some days."
• US resident

Exclusion criteria

• have not ever smoked a cigarette

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Factorial Assignment

Masking: Double Blind

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866 participants in 6 patient groups

Text-only PWL, immediate post

Experimental group

Description:

Exposure to 4 FDA-mandated warning labels and numeric risk information for 8 outcomes related to those warnings (2 outcomes for each PWL; half as percentage, half as frequency) Posttest measures (e.g., memory, risk perceptions, quit intentions) administered immediately following last exposure to warning labels

Treatment:

Behavioral: text-only PWL

Behavioral: immed posttest

Text-only PWL, delay posttest

Experimental group

Description:

Exposure to 4 FDA-mandated warning labels and numeric risk information for 8 outcomes related to those warnings (2 outcomes for each PWL; half as percentage, half as frequency) Posttest measures (e.g., memory, risk perceptions, quit intentions) administered 6 weeks following last exposure to warning labels

Treatment:

Behavioral: text-only PWL

Behavioral: delay posttest

Low-emot PWL, immed post

Experimental group

Description:

Exposure to 4 FDA-mandated warning labels paired with images that elicit little emotion and numeric risk information for 8 outcomes related to those warnings (2 outcomes for each PWL; half as percentage, half as frequency) Posttest measures (e.g., memory, risk perceptions, quit intentions) administered immediately following last exposure to warning labels

Treatment:

Behavioral: immed posttest

Behavioral: low-emot PWL

Low-emot PWL, delay posttest

Experimental group

Description:

Exposure to 4 FDA-mandated warning labels paired with images that elicit little emotion and numeric risk information for 8 outcomes related to those warnings (2 outcomes for each PWL; half as percentage, half as frequency) Posttest measures (e.g., memory, risk perceptions, quit intentions) administered 6 weeks following last exposure to warning labels

Treatment:

Behavioral: delay posttest

Behavioral: low-emot PWL

High-emot PWL, immed posttest

Experimental group

Description:

Exposure to 4 FDA-mandated warning labels paired with images that elicit high emotion and numeric risk information for 8 outcomes related to those warnings (2 outcomes for each PWL; half as percentage, half as frequency) Posttest measures (e.g., memory, risk perceptions, quit intentions) administered immediately following last exposure to warning labels

Treatment:

Behavioral: high-emot PWL

Behavioral: immed posttest

High-emot PWL, delay posttest

Experimental group

Description:

Exposure to 4 FDA-mandated warning labels paired with images that elicit high emotion and numeric risk information for 8 outcomes related to those warnings (2 outcomes for each PWL; half as percentage, half as frequency) Posttest measures (e.g., memory, risk perceptions, quit intentions) administered 6 weeks following last exposure to warning labels

Treatment:

Behavioral: high-emot PWL

Behavioral: delay posttest