A bias for action in cancer screening?

Area of Science:

• Health Psychology
• Medical Decision Making
• Cancer Prevention

Background:

• Public enthusiasm for cancer screening is high, potentially due to incomplete knowledge of risks and benefits.
• Previous research suggests over-enthusiasm for certain cancer screening tests.

Purpose of the Study:

• To investigate if individuals would still desire cancer screening even when fully informed that the test does not improve survival.
• To identify psychological factors, beyond disbelief in ineffectiveness, that influence preferences for potentially unbeneficial screening.

Main Methods:

• Two studies were conducted: one with a nationally representative U.S. sample and another with an online convenience sample.
• Participants were presented with a hypothetical breast or prostate cancer screening test explicitly stated to not reduce cancer death or extend life.
• Preferences for the hypothetical screening were assessed, along with beliefs about screening, risk perceptions, cancer worry, and desire for information.

Main Results:

• Over half of participants expressed a desire to receive the hypothetical screening test, despite knowing it was ineffectual.
• While many participants doubted that screening might not save lives, this disbelief alone did not fully explain screening preferences.
• Cancer worry, the desire for reassurance, and a need for health information significantly predicted preferences for unbeneficial screening, even after controlling for other factors.

Conclusions:

• A significant portion of the public may desire cancer screening tests irrespective of their proven efficacy in saving lives.
• Psychological factors such as cancer worry and the pursuit of reassurance play a crucial role in driving demand for screening, even when benefits are absent.
• Understanding these motivations is critical for developing effective public health communication strategies regarding cancer screening.