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Table 1 Relationship between blood pressure and clinical outcome

From: Debate: A subversive view of subsets - a dissident clinician's opinion

Systolic blood pressure

Control group mortality

Atenolol group mortality

Odds ratio

95% confidence interval

<120 mmHg

6.8% (69/897)

7.7% (63/930)

1.147

0.804-1.635

120-159 mmHg

4.3% (171/4640)

3.7% (195/4583)

0.861

0.698-1.062

≥ 160 mmHg

4.3% (73/2500)

2.9% (107/2477)

0.666

0.492-0.902

  1. Breslow-Day test: χ2 = 5.269, DF = 2, P = 0.072. Breslow-Day (low systolic blood pressure versus the other two blood pressure ranges): χ2 = 3.412, DF = 1, P = 0.065. Testing for interaction of blood pressure and study, P = 0.015.
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