Fast-food giant McDonald's (NYSE:MCD) has rebounded nicely from a period more than three years ago when it suffered declines in global comparable sales. For 13 quarters in a row, McDonald's has reported positive global comparable sales. But some investors have worried about how sustainable this return to growth is, since the fast-food company's comps growth started decelerating during the first half of the year.

On Tuesday, however, McDonald's addressed investor worries with an acceleration in comparable-sales growth and better-than-expected revenue and earnings per share. The news sent McDonald's stock soaring on Tuesday, with shares ending the trading day up 6.3%.

As investors consider McDonald's latest quarterly results, here's an overview of some of the key figures from the report.

A pack of fast-food French fries next to a double-decker burger

Image source: Getty Images.

1. Comparable sales increased 4.2%

First, the headline figure: McDonald's global comparable sales -- sales at all restaurants in operation for at least 13 months -- increased 4.2% year over year. Notably, this was an acceleration from McDonald's 4% growth in global comparable sales in its second quarter of 2018.

This growth comprised a 2.4% increase in comparable sales in the U.S., a 5.4% increase in McDonald's international segment, and a 4.6% bump in its "high growth" international markets.

2. Revenue of $5.37 billion

A 7% year-over-year decrease in McDonald's third-quarter revenue was primarily driven by the impact of the company's strategic refranchising initiative. Still, McDonald's $5.37 billion in revenue was ahead of a consensus analyst estimate for $5.32 billion.

3. Adjusted operating income was up 2%

McDonald's operating income, excluding both the impact of sales of its businesses in China and Hong Kong in the year-ago quarter and prior-year restructuring and impairment charges, increased 2% year over year. In constant currencies, operating income was up 4% -- a stark difference from the company's 1% decrease in adjusted constant-currency operating income in Q2.

4. Systemwide sales increased 5%

McDonald's systemwide sales -- sales from both company-owned and franchise restaurants -- were up 5% year over year. This was in line with McDonald's strong second-quarter systemwide sales growth of 5%.

5. Earnings per share rose 9%

This momentum across McDonald's business, combined with the company's share repurchases, helped McDonald's earnings per share rise 9% year over year to $2.20. Adjusted earnings per share jumped 19%, beating consensus analyst estimates.

With a strong quarter behind it, McDonald's CEO Steve Easterbrook is confident about the company's future. "We remain confident that our strategy will drive long-term, profitable growth," he said.

The results certainly make the company's ambitious long-term targets seem more reasonable. Beginning in 2019, McDonald's is aiming for average annual systemwide sales growth between 3% and 5%, and earnings-per-share growth in the high single digits.

Daniel Sparks has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.