Using latent class analysis to examine usage patterns of website features for pregnant women
Methods: We report on a cohort of racially and socioeconomically diverse pregnant women ages 18-35 enrolled in a randomized controlled trial to prevent excessive gestational weight gain. Women were randomized to receive: website access with articles, resources, and blogs (control, n=557) or the same website with an additional weight tracker and goal setting tools (intervention, n=1112). Latent-class analysis was used to identify patterns of usage and chi-squared analysis was used to examine associations with demographic characteristics including: income, BMI, race, and age.
Results: Four distinct patterns of usage emerged in our intervention and control arms: non-users (21% and 18%, respectively); minimal users (34% and 34%); viewers-of-content (34% and 34%); and super-users (11% and 14%). Overall patterns of website usage were similar between the intervention and control website, but the demographics of those patterns varied. For instance, among super-users there were a higher proportion of overweight/obese women in the intervention arm compared to the control arm (p=0.09).
Discussion: These emergent patterns illuminate how website features cluster among a diverse study population and could guide the development of future interventions.
Learning Areas:Conduct evaluation related to programs, research, and other areas of practice
Implementation of health education strategies, interventions and programs
Planning of health education strategies, interventions, and programs
Public health or related research
Social and behavioral sciences
Identify different patterns of website usage in an online intervention to reduce excessive gestational weight gain. Compare the patterns of usage across demographic characteristics. Discuss ways that patterns of usage can serve as a modifying factor in examining the outcomes of interventions.
Keyword(s): Interventions, Internet Tools
Qualified on the content I am responsible for because: I am qualified to present because a post-doctoral associate at Cornell University in Nutritional Sciences working on a healthy pregnancy project in Rochester, NY.
Any relevant financial relationships? No
I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.