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Table 4 Use of healthcare services during pre- and post-index periods

From: Changes in healthcare utilization and costs associated with sildenafil therapy for pulmonary arterial hypertension: a retrospective cohort study

Service

Pre-index

Post-index

P-value

Outpatient services

 Physician office visits

  Number (%) with ≥1 visits

561 (98.9)

559 (98.6)

0.48

  Number of visits

  Mean (95% CI)

11.7 (11.1, 12.4)

12.1 (11.3, 12.9)

0.60

  Median (IQR)

10 (6, 15)

10 (6, 16)

 

 Other outpatient office visits

  Number (%) with ≥1 visits

550 (97.0)

540 (95.2)

0.08

  Number of visits

  Mean (95% CI)

10.1 (9.4, 10.9)

10.3 (9.5, 11.1)

0.52

  Median (IQR)

8 (5, 13)

8 (4, 14)

 

 ED visits

  Number (%) with ≥1 visits

194 (34.2)

140 (24.7)

<0.01

  Number of visits

  Mean (95% CI)

0.7 (0.6, 0.8)

0.5 (0.4, 0.7)

<0.01

  Median (IQR)

0 (0, 1)

0 (0, 0)

 

Hospitalizations

 Number (%) with ≥1 hospitalizations

199 (35.1)

164 (28.9)

0.01

 Number of hospitalizations

  Mean (95% CI)

0.5 (0.4, 0.6)

0.5 (0.4, 0.5)

0.18

  Median (IQR)

0 (0, 1)

0 (0, 1)

 

 Length of stay

  All patients

  Mean (95% CI)

4.3 (3.5, 5.1)

3.9 (3.0, 4.7)

0.06

  Median (IQR)

0 (0, 5)

0 (0, 3)

 

  Patients with ≥1 hospitalizations

  Mean (95% CI)

8.8 (7.3, 10.3)

7.8 (6.2, 9.5)

0.06

  Median (IQR)

5 (0, 11)

3 (0, 9)