In public health we have a clear idea of what we should be doing. We say that we should be implementing evidence-based practices. The National Association of Local Boards of Health has an excellent guide to the topic . What this means is that we should be doing things that are scientifically proven to work. We should not spend a lot of the tax payers’ dollars on things whose effectiveness is questionable.
In looking at the evidence base, most public health
researchers conclude that the most effective and lowest cost way to improve
community health is through public policy, for example regulations against
smoking in public places like bars and restaurants, regulations requiring food
handlers to be trained, and regulations requiring inspection of septic systems.
While the technology underlying many public health interventions is very
effective: vaccines, sewers, seat belts, etc., public policies always accompany
the successful implementation of such technology: kids must be vaccinated to go to school; if
you build a house you have to hook up to the sewer or get a septic system; cars
must have seat belts and drivers must wear them. Some people are bugged by regulations,
but regulations work to protect the health of the public.
Another thing the evidence shows is that broad-based
multi-media campaigns to educate and inform the public can be effective in
improving public health also. The City of New York’s anti-smoking campaigns are
a good example. These
campaigns involve many community organizations, multiple media channels and the
use of messages shown by research to be effective. Furthermore these campaigns
are sustained for long periods of time and are regularly evaluated so course
corrections can be made. All of this means they cost money.
We start out trying to convince policy makers to embrace
policies that protect the health of the public. If that doesn’t work we switch
to broad-based community campaigns to convince the public to alter their
behavior voluntarily. When we can no
longer afford effective campaigns, we switch to, well, Facebook
pages.
John’s Hopkins student and experienced social marketer
Erica Holt is researching public health and social media. She recently shared her literature review on
the topic.
She asked and answered the question…
“Does social media work [for public health] in certain situations, with certain audiences, for certain health outcomes? There’s not one study that I’ve found that shows this is the case, just yet.”
Before I go on, I should say I agree that health departments should have Facebook pages and Twitter accounts. They should have them for the same reason they have a sign in front of their building, or a phone number. The thing is, you cannot show that the sign improves health. The existence of the sign is not a sufficient condition for health improvement; it tells you a health department is here, but not whether that health department is doing its job.
Before I go on, I should say I agree that health departments should have Facebook pages and Twitter accounts. They should have them for the same reason they have a sign in front of their building, or a phone number. The thing is, you cannot show that the sign improves health. The existence of the sign is not a sufficient condition for health improvement; it tells you a health department is here, but not whether that health department is doing its job.
In fact MMDHD is listed in a recent issue of the American Journal of Public Health as an innovator because we got into Facebook early. However, the same article concludes that most
local health departments with Facebook pages have fewer than 200
followers!
There are some evidence-based practices related to social
media that Erica Holt missed. But these practices do not support the effectiveness
of broad-based campaigns based on free social media alone. Instead they all involve interventions using
social media with people who have already made up their mind they want to make
a change—for example text message reminders to diabetics who are already
involved in a nutrition and exercise program.
MMDHD’s Facebook page for breastfeeding moms in the WIC program is popular
because these moms are engaged with their health and want to learn more. But texting an over-eater who is not worried
about their over-eating has shown no promise so far. And Facebooking about immunizations on a site
with 200 followers isn’t going viral.
One of the most widely cited examples of the effective use
of social media by public health is the Zombie Apocalypse campaign the CDC has
run for several years. The campaign was enormously fun for us in
public health, and it probably is effective as a curriculum aid. But I wonder what we got at the end of the day. I still want
to know if Americans understand the principles of communicable disease control
better, or if they are more supportive of governmental public health, as a
result?
