Google Continues to Use its Power for Public Health Good

Yesterday, Google announced its new surveillance system for Dengue Fever. Dengue Fever is a disease caused by four related viruses spread by a particular species of mosquito. It can cause high fever, rash, muscle and joint pain, and in severe cases- bleeding, a sudden drop in blood pressure (shock) and death. Millions of cases of Dengue infection occur worldwide each year. Most often, dengue fever occurs in urban areas of tropical and subtropical regions.

The system is similar to that which was previously released as their Google Flu Trends program. These systems use search queries within Google (for example those that enter the disease's name and/or symptoms) to identify trends. The Dengue system also takes advantage of a new feature called Google Correlate, which shows previously unknown correlations between search terms. These correlations allow researchers to model real world behaviors by examining internet search trends. For those who may be skeptical of this model, you should check out a publication (co-authored by Google and the Centers for Disease Control and Prevention-CDC) in the 2009 Nature Journal . The article reports that "because relative frequencies of certain queries were highly correlated with the percentage of physician visits in which a patient presents with influenza-like symptoms, we can accurately estimate the current level of weekly influenza activity in each region of the United States, with a reporting lag of about one day."

This is a pretty exciting addition to public health surveillance (where the goal is systematic, ongoing, data collection that is used to monitor trends, identify priorities, direct resources, identify emerging hazards, and evaluate interventions).

This is not the first time that Google has jumped into the public health field with an impressive contribution. In 2010, Google searches related to suicide started appearing with a message guiding users to the toll-free number for the National Suicide Prevention Lifeline. The number is 1-800-273-8255. Triggered by searches such as "I want to die" or "ways to commit suicide," the number is listed next to an icon of a red telephone, at the top of the search results.

The addition of the Lifeline number came shortly after (at the suggestion of a Google user), the company started displaying the hotline for the American Association of Poison Control Centers after searches for "poison emergency."

These cases of Google's work in public health are great examples of effective health communication and public health principles:

• Identifying the primary channels through which your audience searches for health information (more and more are utilizing the internet) and delivering accurate and effective information and/or interventions via those channels.

• Maximizing data driven surveillance systems- using existing data (e.g., internet searches) to identify public health trends.

• Building strong partnerships (as evidenced by the publication by Google and CDC) CDC has partnered with a company with specific expertise and resources in an area that can be invaluable to their work.
  

Will New Ads in Georgia "Stop Childhood Obesity" or Increase Stigma and Bullying?

On Friday's Today show, there was an interesting analysis of a new campaign from the Georgia Child Health Alliance (GCHA) aimed at reducing childhood obesity. According to the GCHA website, the Warning: Stop Childhood Obesity media campaign "is part of a large-scale public awareness campaign designed to educate Georgians on the childhood obesity epidemic facing our state. Backed by market research, the campaign’s warning messages about obesity are developed to reach parents and children using communication vehicles such as billboards, television, radio and more".

From the Today show segment (which featured the campaign's Director, a child actor featured in the ads, and a child psychologist) we learned that this media campaign is part one of a three part campaign. The three parts were briefly outlined:

1- Raise awareness about childhood obesity; letting kids voice their struggle in their own words.
2- "Activate"- focus on healthy eating and activity
3- Focus on real solutions

While the GCHA outlines their strategic mission for this campaign, they are hearing some major objections to their approach and it continues to grab national headlines. The major concerns voiced by objectors such as Rebecca Puhl (a weight discrimination expert from Yale University), are that the ads will increase stigma for overweight kids (which could increase their experience of bullying) and that the ads will be ineffective due to their fear-based approach. In my review of the ads, I have mixed (mostly negative) feelings about their development and implementation:

• Strike One: The goal of this campaign is listed as "raising awareness". These may be my two least favorite terms in all of public health. "Raising awareness" is too vague and does not lend itself to being evaluated. In actuality, campaign developers usually want to "increase knowledge" or "change perceptions" or "change behavior" (e.g., calling the 800 number on the screen). These are all things which can actually be measured and should be stated more clearly.

• Strike Two: When the Today show asked the Campaign director about the audience for these ads, he replied "parents, kids, and educators". Again, this is way too vague. Your message and call to action (i.e., what you want the viewer to do after watching the ad) would be completely different for each of those audiences. For example, you may want educators to reach out to the parents of overweight kids in their classes or you may want kids to tell an adult if they are being bullied about their weight. These messages need to be tailored to each audience.
  

• Strike Three: These ads definitely fall into the "fear-based" category. As you watch them, the ads read "WARNING" in bold red letters and you hear a "boom" (kinda like on "Law & Order) as the statistics run across the screen. As I have mentioned in previous blog posts, fear-based approaches have been found to be ineffective in other areas of prevention (e.g., alcohol and other drugs).

• In terms of redeeming factors, it does seem that the campaign was developed using formative research which included focus groups with overweight kids. The results of these focus groups were used to develop the dialogue read by child actors in the ads so that it would be "in their words". If kids are the audience for these ads, then the age appropriate priorities and dialogue (with the inclusion of child actors) is positive. From health behavior theory (e.g., Social Learning Theory), we know that kids will respond better if they relate to those in the ads.
  

Of course, it is unclear if they also focus group tested the ads and billboards after initial development, before they were rolled out. It is also unclear how they are being evaluated and what the ultimate goals are (beyond "increased awareness"). I'll be interested to see parts two and three rolled out and hope to include follow up thoughts here on Pop Health.

From The West Wing to the National Health Care Debate

Anyone who knows me well knows that "The American President" is one of my favorite movies. If it is a favorite of yours as well, you may recognize that the actress who plays Press Secretary Robin McCall also plays National Security Advisor Dr. Nancy McNally in "The West Wing". The actress is Anna Deavere Smith.

This week in my "Qualitative Research Methods in Community Health" class, we discussed ethnography. Specifically we discussed Ms. Smith's work as an example of performance ethnography. For over a decade, she has interviewed people across the country and used the "data" to develop a one-woman show. Her newest play is called "Let Me Down Easy" and its goal is to show the human side of the national health care debate. I highly recommend viewing the 10-minute excerpt and interview here.

I'm so sorry that I missed her play when it came to Philadelphia earlier this year because I think it is an amazing example of the richness of data collected using qualitative methods. It is often argued that qualitative methods are too "soft" and limited in view. I've heard them described as "basically just journalism". However, I would argue that qualitative methods are essential to the success of public health.

Instead of surveys and databases, these methods collect data via interview, discussion, and observation. The research is meant to discover the complex relationship between personal and social meaning, individual and cultural practices, and the material environment or context. In contrast to what we have learned since grade school science about the scientific method and generalizability of findings- here the focus is on obtaining a deeper understanding of a population or phenomenon.

Ms. Smith conducted over 300 interviews for "Let Me Down Easy" and ultimately condensed her findings to show the experience of contemporary health care through the eyes of 20 individuals. These kinds of stories are incredibly powerful in public health. They open our eyes to challenges that we never would have found via survey...because we wouldn't have known to ask the right questions. They allow us to share stories with policymakers so they can see the impact of their decisions beyond the sterile statistics often cited. They can allow us to explore experiences or illnesses that occur in too small a population to survey.

Ideally, quantitative and qualitative methods should be used together to create the strongest public health research design possible. It should not be us vs. them...but instead a joint effort. I encourage us all to see the human side of health care reform when Ms. Smith's play airs on PBS "Great Performances" next season.