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  Indian J Med Microbiol
 

Figure 2: Holter monitoring-derived mean heart rate distributions at each hour point according to the head-up tilt test results. (a) Based on positive response, F=5.476, P=0.021, according to general line model repeated measures; (b) based on syncopal subtypes, F=2.053, P=0.132, according to general line model repeated measures; (c) based on syncopal stages, F=0.199, P=0.820, according to general line model repeated measures. IP=Isoproterenol

Figure 2: Holter monitoring-derived mean heart rate distributions at each hour point according to the head-up tilt test results. (a) Based on positive response, <i>F</i>=5.476, <i>P</i>=0.021, according to general line model repeated measures; (b) based on syncopal subtypes, <i>F</i>=2.053, <i>P</i>=0.132,  according to general line model repeated measures; (c) based on syncopal stages, <i>F</i>=0.199, <i>P</i>=0.820, according to general line model repeated measures. IP=Isoproterenol