As Apple, Samsung and Google field health and fitness data aggregators, 30% of online consumers would be interested in using such a service, and more than one-third would consider doing so if it saved them money.

That’s one finding of a new survey from Burlington, Mass.-based Decision Resource Group. Thirty-seven percent of online consumers surveyed in Manhattan Research’s Cybercitizen Health U.S. 2014 study said that they would feel motivated to use an aggregator if it lowered their healthcare costs, but nearly as many cited confidence in the security of their health data as a concern. Manhattan Research is a Decision Resources Group company.

Though the percentage of online consumers using wearable devices for health and fitness is still in the single digits, 32% of respondents expressed interest in using a wearable device to improve health. But nearly 39% strongly agreed they have privacy concerns about using web sites or apps that request to store their personal information.

Rory Stanton, a Decision Resources Group digital analyst, said, “With the proliferation of connected devices and trackers, patients are amassing personal health data like never before, and healthcare providers are under pressure to start incorporating that data into patient care. While data security remains a concern for patients, they are willing to share data if it moves the needle on improving their health.”

“Companies getting into the health data aggregation game will need to make collection across systems seamless and easy to share with healthcare providers,” said Stanton. “As patient generated data begins to influence clinical decisions, this digital health footprint promises personalized and relevant insights that will enable physicians to transform patient care.”