Table 1.

Incorporation of findings from previous studies into the development of the intervention

Findings from previous studies	Implication for the intervention	How could this be addressed in the intervention?
People are aware of previous lung cancer awareness campaigns, but mostly cough (not other symptoms), and not very detailed knowledge (Birt et al., 2014; Caswell et al., 2017; McLachlan et al., 2015)	We need to find a way to present information about other symptoms as well without overwhelming users	Elicit symptoms from individual users first and provide more in‐depth information on these (tailored information)
Some people aware of previous lung cancer awareness campaigns assume the information is not relevant to them (Caswell et al., 2017; McLachlan et al., 2015)	We need to make sure the information presented is perceived as personally relevant	Present individually tailored information
Family/friends play an important role in help‐seeking in lung cancer and are often the trigger for initial consultation (Braybrook et al., 2011; Corner et al., 2006; Smith et al., 2005; Tod et al., 2008)	We need to enhance users’ belief that other significant people (family/friends) want them to seek medical advice	Emphasize message is endorsed by family/friends
People tend to use a ‘process of elimination’ to diagnose symptoms online: comparing symptoms against those listed and discarding conditions for which the match is low (likely to happen with lung cancer as people typically only display 1–3 symptoms) (Mueller, Jay, Harper, Davies, et al., 2017)	Rather than present individuals with a list of symptoms, we should present them with specific details on their particular symptoms	Personalization of symptom information, presenting detailed information on endorsed symptoms
People use online health information to prepare for consultations (Mueller, Jay, Harper, Davies, et al., 2017); this is also documented for patients with lung cancer (Mueller, Jay, Harper, & Todd, 2017)	We need to provide users with information they can easily take to their next consultation	Printable personalized summary of symptoms, risk factors, and recommendations
People with lung cancer use online health information during the diagnostic interval, to support claims to their GP that further investigation of their symptoms is warranted (Mueller, Jay, Harper, & Todd, 2017)	We need to provide users with guidance on when symptoms warrant further investigation and information that can help them communicate with health professionals	Personalized information on NICE guidelines for suspected cancer referral
People tend to trust websites of well‐known organizations (Mueller, Jay, Harper, & Todd, 2017)	We need to enhance trust by showing that our message is endorsed by NHS health professionals We need to emphasize collaboration with organizations people know	Emphasize message is endorsed by health professionals Mark all pages with the University of Manchester and Medical Research Council logo. Emphasize that NHS practitioners reviewed the intervention