** Shares of pizza chain Domino's DPZ.O down 4% at $353 premarket
** Co misses Q1 sales estimates as budget-strained U.S. consumers cut on discretionary spending, including dining out
** Posts quarterly U.S. same-store sales growth of 0.9% vs analysts' estimate of a 2.72% rise - data compiled by LSEG
** Reports a 0.4% decline in international same-store sales, compared with the estimate of a 0.7% rise
** Logs quarterly EPS of $4.13 vs estimates of $4.27
** DPZ announces $1 billion share buyback program
** As of last close, DPZ down 11.8% YTD
(Reporting by Sanskriti Shekhar in Bengaluru)
((Sanskriti.Shekhar@thomsonreuters.com))