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Table 2 Incidence rates for return visits by cohort

From: Chest pain syndromes are associated with high rates of recidivism and costs in young United States Veterans

 

Incidence Rate (per 10,000 person-years)

Unadjusted Rate Ratio/Hazard Ratio (with 95 % confidence intervals)

P value

Adjusted Rate Ratio/Hazard Ratioa(with 95 % confidence intervals)

P value

Cohort

Unexplained CP

Known CAD

    

 Any Return for CP

8.2

7.1

1.25 (1.16-1.35)b

<0.0001*

1.54 (1.43-1.66)b

<0.0001*

 Unexplained CP Return

7.5

3.9

2..23 (2.05-2.40)b

<0.0001*

2.63 (2.43-2.87)b

<0.0001*

 Death

0.1

0.2

0.51 (0.39-0.68)b,c

0.0001*

0.61 (0.45-0.83)b,c

0.0018*

  1. Notes: Rates area expressed in 10,000 person years; table percentages are column percentages; *the p is significant at > .05 level
  2. aadjusted for age in decades, white race, higher education, marital status, hypertension, diabetes, hyperlipidemia, smoking and obesity; there was no interaction found between gender and cohort
  3. bratio of rates of return visits in Unexplained chest pain cohort/CAD cohort
  4. cCox regression model used to calculate hazard rates