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. 2014 Jun 6;9(6):e99035. doi: 10.1371/journal.pone.0099035

Table 2. Laboratory, electrocardiographic and risk scoring results of the study population by levels of sex-minute walk test distance.

6MWT levels (m)
All group Level I (>450 m) Level II (300–450 m) Level III (<300 m) P
Number of pt. 100 pt 40 pt 32 pt 28 pt
Basal CK (U/L) 1616±195 1454±262 1211±270 2160±437 NS *
Cumulative 48-h CK release (U/L) 9085 (5976–14593) 8174 (4135–13482) 8465 (4558–14466) 9296 (6013–15012) NS *
Serum creatinine levels (µmol/L) 0.002 *
0.4–O.79 21(21%) 14 4 3
0.8–1.1 46(46%) 22 15 9
1.2–1.59 19(19%) 3 7 9
1.6–1.99 7(7%) 0 3 4
2–3.99 7(7%) 0 3 4
Success of fibrinolysis using ECG ST resolution 0.04
<50% 60 (60%) 12 22 26
50–75% 30 (30%) 14 14 2
>75% 10 (10%) 6 3 1
TIMI risk score 3.4±2 2.9±2 3.6±2 3.6±2 NS *
GRACE risk score 147±29 123±17 161±27 166±21 <0.001 *
Low risk (49–125) 25 (25%) 25 0 0
Intermediate risk (126–154) 33 (33%) 15 14 4
High risk (155–319) 42 (42%) 0 17 25

Data are presented as mean ± standard deviation, number (%) of patients.

*Compared using ANOVA test.

Compared using Chi-square or Fisher exact test. TIMI =  Thrombolysis In Myocardial Infarction; CK =  creatine kinase; 6MWT =  sex-minute walk test; GRACE =  Global Registry of Acute Coronary Events; NS = not significant.