Table 1. Primary diagnosis by group, ordered by median age at first admission.
| Diagnostic Group | Subdiagnoses | Children (%) | Admissions (%) | Rate/1000 PYAR1 (95%CI) | Median age first admission |
| Upper Respiratory Tract | 237 (58.5) | 457 (12.1) | 91.4 (79.7, 104.8) | 2.8 Years | |
| Tonsils/Adenoids | 139 (34.3) | 158 (4.2) | 31.6 (27.0,36.8) | 5.1 Years | |
| Croup | 67 (16.5) | 116 (3.1) | 23.2 (19.3, 27.7) | 1.7 Years | |
| Sleep Apnoea | 21 (5.2) | 26 (0.7) | 5.2 (3.5, 7.5) | 8.6 Years | |
| Lower Respiratory Tract | 152 (37.5) | 405 (10.7) | 81.0 (65.0, 100.9) | 1.1 Years | |
| Pneumonia | 100 (24.7) | 198 (5.2) | 20.0 (16.3, 24.2) | 2.4 Years | |
| Acute Bronchiolitis | 57 (14.1) | 89 (2.4) | 17.8 (14.4, 21.8) | 5 Months | |
| Asthma | 28 (6.9) | 64 (1.7) | 12.8 (9.9, 16.2) | 2 Years | |
| Respiratory Tract General | 82 (20.2) | 146 (3.9) | 29.2 (21.5, 39.7) | 10 Months | |
| Congenital Anomalies | 6 (1.5) | 10 (2.5) | 2.0 (1.0, 3.6) | 1 Year | |
| Ear and Hearing | 205 (50.6) | 550 (14.5) | 110.0 (96.0, 126.1) | 2.5 Years | |
| Otitis Media | 194 (47.9) | 457 (12.1) | 91.4 (83.3, 100.1) | 2.5 Years | |
| Oral cavity/Teeth | 154 (38.0) | 215 (5.7) | 43.2 (37.4, 49.9) | 7.8 Years | |
| Congenital Oral Cavity Conditions | 28 (17.6) | 33 (0.9) | 6.6 (4.6, 9.2) | 6.7 Years | |
| Caries | 101 (24.9) | 123 (3.2) | 24.6 (20.5, 29.3) | 6.7 Years | |
| Cardiac Conditions | 108 (26.7) | 243 (6.4) | 48.6 (42.8, 55.0) | 4 Months | |
| Cardiac Septum Defects (CSD) | 92 (22.7) | 189 (5.0) | 37.8 (32.7, 43.4) | 3 Months | |
| Patent Ductus Arteriosus (PDA) | 14 (3.5) | 15(4.0) | 3.0 (1.7, 4.8) | 1.2 Years | |
| Heart Failure | 12 (3.0) | 18 (4.8) | 3.6 (2.2, 5.6) | 7 Months | |
| Pulmonary Hypertension | 7 (0.2) | 4 (1.0) | 0.8 (0.3, 1.9) | 1.1 Years | |
| Infections | 321 (79.3) | 1243 (32.8) | 24.9 (23.5, 26.3) | 1.2 Years | |
| Respiratory Infections | 213 (52.6) | 570 (15.1) | 11.4 (10.5, 12.4) | 1 Year | |
| Otitis Media | 194 (47.9) | 457 (12.1) | 91.4 (83.3, 100.1) | 2.5 Years | |
| Enteric or Diarrhoea-causing Infections | 63 (15.6) | 82 (2.2) | 16.4 (13.1, 20.3) | 2 Years | |
| Digestive System | 153 (37.8) | 380 (10.0) | 76.0 (68.6, 83.9) | 1.5 Years | |
| Congenital digestive system abnormalities | 28 (6.9) | 62 (1.6) | 1.2 (9.6, 15.8) | 4 Days | |
| Upper Digestive Tract | 22 (5.4) | 31 (0.8) | 6.2 (4.3, 8.7) | 5.3 Years | |
| Lower Digestive Tract | 37 (9.1) | 110 (2.9) | 22.0 (18.2, 26.4) | 4.1 Years | |
| Enteric or Diarrhoea-causing Infections | 63 (15.6) | 82 (2.2) | 16.4 (13.1, 20.3) | 2 Years | |
| Eye/vision Systems | 86 (21.2) | 161 (4.3) | 32.2 (27.5, 37.4) | 2.7 Years | |
| Disorders to eye movement & support | 74 (18.3) | 118 (3.1) | 23.6 (19.6, 28.3) | 3.1 Years | |
| Congenital eye anomalies | 19 (0.5) | 16 (4.0) | 3.8 (2.4, 5.8) | 2.9 Years | |
| Renal/genitourinary System | 64 (15.8) | 129 (3.4) | 24.8 (16.5, 37.3) | 4.7 Years | |
| Congenital Anomalies | 23 (5.7) | 42 (1.1) | 8.4 (6.1, 11.2) | 4.5 Years | |
| Bladder | 13 (3.2) | 39 (1.0) | 7.8 (5.6, 10.6) | 3.1 Years | |
| Male Reproductive | 31 (7.7) | 37 (1.0) | 7.4 (5.3, 10.1) | 6.4 Years | |
| External Causes | 65 (16.0) | 76 (2.0) | 15.2 (12.1, 18.9) | 3.8 Years | |
| Poisoning | 11 (2.7) | 11 (2.7) | 2.2 (1.2, 3.8) | 4.5 Years | |
| Foreign Bodies Needing Removal | 11 (2.7) | 12 (0.3) | 2.4 (1.3, 4.1) | 4.2 Years | |
| Burns | 6 (1.5) | 6 (0.2) | 1.2 (0.5, 2.5) | 3.1 Years | |
| Musculoskeletal | 67 (16.5) | 103 (2.7) | 20.6 (16.9, 24.8) | 5.3 Years | |
| Congenital musculoskeletal conditions | 10 (2.5) | 11 (0.3) | 2.2 (1.2, 3.8) | 4.8 Years | |
| Fractures of an extremity | 9 (2.2) | 12 (0.3) | 2.4 (1.3, 4.1) | 7.8 Years | |
| Bone and rheumatic disorders | 5 (1.2) | 11 (0.3) | 2.2 (1.2, 3.8) | 6.6 Years | |
| Wounds, Abrasions, or lacerations | 16 (4.0) | 19 (0.5) | 3.8 (2.4, 5.8) | 5.2 Years | |
| Skin/augmentary System | 47 (11.6) | 63 (1.7) | 12.8 (9.2, 17.9) | 4.8 Years | |
| Cyanosis | 5 (1.2) | 6 (0.2) | 1.2 (0.5, 2.5) | 9 Months | |
| Cellulitis | 10 (2.5) | 12 (0.3) | 2.4 (1.3, 4.1) | 3.9 Years | |
| Endocrine/metabolic/immune | 34 (8.4) | 60 (1.6) | 14.0 (7.6, 25.8) | 4 Days | |
| Fetal Neonatal Jaundice | 17 (4.2) | 18 (0.5) | 3.6 (2.2, 5.6) | 1 Day | |
| Immunoglobulin Deficiencies | 2 (0.5) | 25 (0.7) | 5.0 (3.3, 7.3) | 4.8 Years | |
| CNS Disorders | 20 (4.9) | 32 (0.8) | 6.4 (4.5, 8.9) | 1.5 Years | |
| Epilepsy | 5 (1.2) | 8 (0.2) | 1.6 (0.7, 3.0) | 1.6 Years | |
| Non-febrile Convulsions | 5 (1.2) | 7 (0.2) | 1.4 (0.6, 2.8) | 1.1 Years | |
| Blood Disorders | 16 (4.0) | 33 (0.9) | 6.6 (4.6, 9.2) | 3.1 Years | |
| Anemia | 7 (1.7) | 9 (0.2) | 1.8 (0.9, 3.3) | 2.1 Years | |
| Agranulocytosis | 4 (1.0) | 10 (0.3) | 2.0 (1.0, 3.6) | 4.7 Years | |
| Leukaemia | 16 (4.0) | 281 (7.4) | 56.2 (28.5, 110.9) | 4.1 Years | |
| Generalised Infections | 63 (15.6) | 88 (2.3) | 17.6 (14.2, 21.5) | 2.4 Years | |
| Other Non-clinical | 30 (7.4) | 36 (1.0) | 7.2 (5.0, 10.4) | 0.6 Years | |
| Other Diagnoses | 175 (43.2) | 245 (6.5) | 49.0 (42.7, 56.2) | 1 day | |
| Total 2 | 405 | 3,786 | 757.2 (680.2, 843.0) | 2 Years |
1
PYAR: person-years-at-risk of admission;
2
includes 10 children with no record of admission on the HMDS.