Document Classification

Section Type: RESULTS

Text: The mean (+ / - SD) time to reperfusion was 27 + / - 16 minutes in the group with preinfarction angina and 48 + / - 17 minutes in the group without preinfarction angina (P = 0. 04) ; the peak creatine kinase levels were 1118 + / - 783 and 2395 + / - 1615 U per liter, respectively (P = 0. 03) ; the peak creatine kinase MB levels were 102 + / - 67 and 251 + / - 186 U per liter, respectively (P = 0. 009) ; and the 24-hour integrated creatine kinase MB levels were 1716 + / - 1171 and 4267 + / - 3252 U. liter-1 x 24 hours, respectively (P = 0. 009).