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Table 1 Mean annual hospitalization rates and population at risk among individuals with health insurance and served by the studied private hospital group in South Africa, 2007–2012

From: Hospitalizations associated with influenza and respiratory syncytial virus among patients attending a network of private hospitals in South Africa, 2007–2012

Age-groups (in years)

Mean annual population in hospital group a(range)

Cause of hospitalization

Respiratory b(including pneumonia and influenza)

Pneumonia and influenza c

Circulatory d

Mean annual rates e(range f)

Mean annual rates e(range f)

Mean annual rates e(range f)

<1

39529 (33009–43103)

29043 (25500–32697)

11542 (10148–13236)

226 (186–300)

1-4

162117 (132038–180020)

6083 (4741–7496)

1663 (1359–1846)

38 (30–46)

5-19

478789 (405825–519777)

2176 (1887–2564)

433 (337–519)

152 (139–187)

20-44

996137 (838835–1082658)

1322 (1172–1594)

409 (359–467)

841 (772–1036)

45-64

494431 (413592–534990)

2026 (1800–2293)

718 (623–781)

3795 (3511–4570)

65-74

103672 (79611–118082)

3742 (3434–4521)

1417 (1324–1718)

8677 (7546–10894)

≥75

48562 (26893–54317)

7507 (6595–9327)

3873 (3483–4773)

15175 (13990–18814)

All

2323237 (1929803–2532947)

2393 (2181–2767)

709 (654–778)

1938 (1795–2287)

  1. aDetermined by calculating proportion of age-specific population with health insurance, who are served by the hospital group under study, based on their market share estimates.
  2. bHospitalized with a diagnosis of International Classification of Diseases – Tenth Revision (ICD-10) codes of J00-J99.
  3. cHospitalized with a diagnosis of ICD-10: J10-J18.
  4. dHospitalized with a diagnosis of ICD-10: I00-I99.
  5. eHospitalization rate per 100,000 person-years.
  6. fRate ranges over the six years studied, 2007 to 2012.