Boston — For veterinary clinicians, the correlation between animal health and the socioeconomic status of pet owners is probably obvious.
But a new study makes a more definite link, connecting premature deaths among humans to those among animals in poor neighborhoods.
Human health disparities based on affluence are well noted, and now for the first time, Dr. Gary Patronek, VMD, PhD, of the
Animal Rescue League of Boston, has made a similar connection for animal health.
"It's the first study anywhere to demonstrate very rigorously how closely human and animal welfare are linked," Patronek says.
"The same kinds of things that lead to poor health outcomes in people are leading to poor health outcomes in animals."
Looking at 16 neighborhoods around Boston and measuring the number and condition of cats taken to shelters, Patronek concludes
"cat deaths were significantly correlated with human premature deaths at the neighborhood level."
The highest risk of premature cat deaths were among human households that received public assistance, according to the study,
published in February in the American Journal of Veterinary Research. The study was based on a similar area-based analysis
for human health conducted by Harvard University.
Other households deemed most at risk, in order, are: those with unemployment; crowded households, family households with children
in poverty, female-headed households with children, households lacking a high-school diploma and overall poverty.
Poor neighborhoods defined by low incomes weren't just to blame, Patronek adds. Instead, it was places where true poverty
across the board could be found.
"It's not just income related," Patronek says. "Poverty, if you were going to define it, is pretty widespread because there
are a lot of students and young singles. It doesn't represent the same socioeconomic mix of things as family poverty."
The only neighborhoods of the 16 studied that ran contrary to these findings were the Fenway neighborhood, which is low-income
but has a high concentration of college students, and South Boston, which for years has been served by a small, adoption-guarantee
shelter that provides low-cost veterinary services to the community. Cat premature mortality rates were about 50 percent less
than expected in South Boston, the study notes, and "could be considered evidence of the potential impact of increased access
to veterinary care for underserved populations."
In Boston, the study allowed Patronek to see where his city stands compared to those reported by Maddie’s Fund for successful
communities, which have between two and seven dog and cat deaths in shelters per 1,000 people. His study revealed that Boston
has 3.6 shelter deaths of dogs and cats per 1,000 people.
"Boston is right in the middle of the most successful communities out there," he says. "It's a model that can be used in other
places, and it's very topical of pet overpopulation. I think the messages from it are important and relevant."