Table 1.
Diarrhoea-associated hospitalizations by reported diagnosis (primary diagnosis only) from Clinical Management System (CMS) among 100,330 children aged 0 to <18 years admitted to the Prince of Wales Hospital, Hong Kong (1 July 2000 to 31 March 2011) compared with actual results from the laboratory for patients who had stool specimens sent for rotavirus testing to derive three adjustment factors to account for possible over or under-diagnosis of rotavirus based on CMS ICD diagnosis.
| Age | No. of admission | No. (%) with CMS diagnosis of gastroenteritis (GE)a | No. (%) with rotavirus CMS ICD diagnosis (008.61) (CMSRV+) | No. (%) stool specimen sent to lab | No. (%) with GE and stool specimen sent to lab | No. (%) with GE and stool specimen NOT sent to lab | No. (%) diagnosed rotavirus positive (RVLAB+) | RVLAB+ and CMSRV+ | RVLAB+ and CMSRV− | RVLAB− and CMSRV+ |
|---|---|---|---|---|---|---|---|---|---|---|
| 0 to <12m | 37,488 | 2312 (6.2%) | 342 (0.9%) | 3438 (9.2%) | 1759 (76.1%) | 553 (23.9%) | 552 (1.5%) | 336 | 216 | 4 |
| 12 to <24m | 9049 | 1675 (18.5%) | 384 (4.2%) | 1876 (20.7%) | 1291 (77.1%) | 384 (22.9%) | 586 (6.5%) | 382 | 204 | 1 |
| 24 to <36m | 7189 | 1020 (14.2%) | 183 (2.5%) | 937 (13.0%) | 640 (62.7%) | 380 (37.3%) | 297 (4.1%) | 177 | 120 | 3 |
| 36 to <48m | 6653 | 812 (12.2%) | 115 (1.7%) | 666 (10.0%) | 433 (53.3%) | 379 (46.7%) | 174 (2.6%) | 112 | 62 | 1 |
| 48 to <60m | 4918 | 562 (11.4%) | 61 (1.2%) | 397 (8.1%) | 262 (46.6%) | 300 (53.4%) | 101 (2.1%) | 58 | 43 | 1 |
| 0d to <24m | 46,537 | 3987 (8.6%) | 726 (1.6%) | 5314 (11.4%) | 3050 (76.5%) | 937 (23.5%) | 1138 (2.4%) | 718 | 420 | 5 |
| 0d to <60m | 65,297 | 6381 (9.8%) | 1085 (1.7%) | 7314 (11.2%) | 4385 (68.7%) | 1996 (31.3%) | 1710 (2.6%) | 1065 | 645 | 10 |
| 0 to <18y | 100,330 | 8595 (8.6%) | 1222 (1.2%) | 8705 (8.7%) | 5150 (59.9%) | 3445 (40.1%) | 1954 (1.9%) | 1196 | 758 | 10 |
a
Primary diagnosis code only.