Spain's gross domestic product grew 0.8% in the first quarter from the previous three-month period, National Statistics Institute (INE) said on Tuesday, revising the figure from an initial 0.7% released in April.

Analysts polled by Reuters expected gross domestic product had expanded 0.7% quarter-on-quarter.

On an annual basis, Spain's first-quarter economic output expanded 2.5%, INE said, revising the growth from a preliminary 2.4%. Analysts expected an average growth of 2.4%, according to the Reuters poll. (Reporting by Matteo Allievi, editing by Inti Landauro)