CREATE TABLE table_76392 ("Year" TEXT, "Result" TEXT, "Matches" TEXT, "Wins" TEXT, "Draws" TEXT, "Losses" TEXT)

What were the matches where the teams finished in the first group stage, in 1998?
SELECT "Matches" FROM table_76392 WHERE "Result" = 'first group stage' AND "Year" = '1998'
SELECT "Matches" FROM "table_76392" WHERE "Result" = 'first group stage' AND "Year" = '1998'