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Table 3 Cardiac Parameters and Baseline and Endpoint

From: Comparative acute efficacy and tolerability of OROS and immediate release formulations of methylphenidate in the treatment of adults with attention-deficit/hyperactivity disorder

 

Placebo N = 116

IR-MPH (tid) N = 102

OROS-MPH N = 67

 
 

mean ± sd

mean ± sd

mean ± sd

Omnibus Statistic

Systolic Blood Pressure

    

   Baseline

121.4 ± 13.7

125.6 ± 13.3

119.2 ± 13.2

 

   Endpoint

120.3 ± 13.0

127.5 ± 12.7

122.6 ± 11.9

 

   Change

-1.2 ± 12.3

2.0 ± 12.6

3.5 ± 11.8

χ2 (2) = 6.7, p = 0.03

Diastolic Blood Pressure

    

   Baseline

71.3 ± 10.5

75.1 ± 9.6

68.6 ± 8.9

 

   Endpoint

69.8 ± 10.0

77.3 ± 9.2

72.8 ± 9.3

 

   Change

-1.5 ± 8.4

2.1 ± 8.8 *

4.0 ± 8.5 *

χ2 (2) = 19.9, p < 0.0001

Pulse

    

   Baseline

76.2 ± 10.9

76.5 ± 12.5

78.2 ± 11.6

 

   Endpoint

71.5 ± 10.9

82.3 ± 12.7

82.9 ± 12.6

 

   Change

-4.8 ± 11.7

5.9 ± 12.9*

4.5 ± 10.5*,$

χ2 (2) = 27.9, p < 0.0001

PR Interval

    

   Baseline

153.2 ± 18.7

151.3 ± 25.8

151.3 ± 18.3

 

   Endpoint

151.8 ± 17.8

147.9 ± 20.4

147.9 ± 21.1

 

   Change

-1.1 ± 13.7

-2.5 ± 11.8

-1.2 ± 11.3

χ2 (2) = 0.6, p = 0.8

QRS Interval

    

   Baseline

87.5 ± 10.9

90.1 ± 12.8

93.3 ± 9.9

 

   Endpoint

88.1 ± 10.4

87.8 ± 10.9

91.5 ± 11.3

 

   Change

0.5 ± 8.6

-1.2 ± 9.7

-1.2 ± 5.8

χ2 (2) = 3.1, p = 0.2

QTc Interval@

    

   Baseline

413.4 ± 18.0

417.1 ± 19.8

412.5 ± 15.6

 

   Endpoint

413.6 ± 16.3

420.9 ± 18.4

414.5 ± 18.8

 

   Change

0.5 ± 18.4

6.1 ± 16.0

1.9 ± 15.7

χ2 (2) = 2.7, p = 0.3

  1. *, p < 0.05 versus Placebo, $, p < 0.05 versus IR-MPH (tid), @, Bazzett's Correction