Overall restaurant sales were down in October for the first time in 2015, according to the Applied Predictive Technologies. The sales fell 0.1 percent as compared to October 2014.

Quick-service restaurant sales comps came in at a growth of 2.9 percent, while full-service restaurants dipped below zero.

Patrick O’Reilly, APT President & COO, says in the release, “October marks the first month in 2015 that we’ve seen sales comps fall below zero for restaurants, especially for the FSR segment. As competition from fast casual players heightens, FSRs are launching new programs to encourage guest loyalty and meet new customer preferences. It’ll be interesting to see how the industry shakes out in the coming year amidst all of these new innovations.”

The figures were collected from transaction data from more than 100,000 retail and restaurant branches. Some highlights from the study included

During Halloween weekend:

Overall restaurants: Sales were down 0.2 percent, checks fell 2.8 percent, and check size rose 2.6 percent.

Full-service restaurants: Sales fell 1.2 percent, checks 4 percent, and check size gained 2.8 percent.

Quick-service restaurants: Sales were up 5.7 percent, checks flat, and check size up 5.7 percent.

In October:

Overall restaurants: Sales dropped 0.1 percent, checks 2.6 percent, and check size was up 2.5 percent.

Full-service restaurants: Sales decreased 0.3 percent, checks 3 percent, and check size gained 2.7 percent.

Quick-service restaurants: Sales grew 2.9 percent, checks dropped 1.2 percent, and check size was up 4.1 percent.

San Diego (3.7 percent) was the top performing metro area in October, followed by Riverside, California (3.7 percent), Portland, Oregon (2.9 percent), Los Angeles (2.7 percent), and San Francisco (2.2 percent).

The bottom performing metros were paced by Detroit (4.3 percent decrease), Houston (3.6 percent), Pittsburgh (2.5 percent), Washington, D.C. (2.1 percent), and Philadelphia (1.9 percent).