Table 1.
Epidemiological and clinical profiles of the 1084 confirmed COVID-19 cases reported in Hong Kong
| Imported case( n = 657) (%) |
Linked local case (n = 250) (%) |
Unlinked local case (n = 69) (%) |
Possibly imported case (n = 108) (%) |
Total(n = 1084) (%) | p-value | |
|---|---|---|---|---|---|---|
| Total | 657 (60.6%) | 250 (23.1%) | 69 (6.4%) | 108 (10%) | 1084 | |
| Age (years) | ||||||
| 0–14 | 29 (4.4%) | 9 (3.6%) | 0 (0%) | 1 (0.9%) | 39 (3.6%) | <0.00001a |
| 15–24 | 264 (40.2%) | 17 (6.8%) | 1 (1.4%) | 7 (6.5%) | 289 (26.7%) | |
| 25–44 | 181 (27.5%) | 122 (48.8%) | 35 (50.7%) | 57 (52.8%) | 395 (36.4%) | |
| 45–64 | 142 (21.6%) | 73 (29.2%) | 25 (36.2%) | 36 (33.3%) | 276 (25.5%) | |
| 65+ | 41 (6.2%) | 29 (11.6%) | 8 (11.6%) | 7 (6.5%) | 85 (7.8%) | |
| Sex | ||||||
| Male | 362 (55.1%) | 123 (49.2%) | 42 (60.9%) | 61 (56.5%) | 588 (54.2%) | 0.241a |
| Female | 295 (44.9%) | 127 (50.8%) | 27 (39.1%) | 47 (43.5%) | 496 (45.8%) | |
| Condition | ||||||
| Ever critical or serious/death | 21 (3.2%) | 14 (5.6%) | 16 (23.2%) | 2 (1.9%) | 53 (4.9%) | <0.00001a |
| Stable | 636 (96.8%) | 236 (94.4%) | 53 (76.8%) | 106 (98.1%) | 1031 (95.1%) | |
| Mode of case identification | ||||||
| Active notification by medical practitioners | 236 (35.9%) | 48 (19.2%) | 2 (2.9%) | 50 (46.3%) | 336 (31%) | <0.00001a |
| Contact tracing by CHP | 72 (11%) | 132 (52.8%) | 5 (7.2%) | 5 (4.6%) | 214 (19.7%) | |
| Enhanced laboratory surveillance in public hospitals | 6 (0.9%) | 15 (6%) | 21 (30.4%) | 7 (6.5%) | 49 (4.5%) | |
| Enhanced surveillance at emergency departments, GOPCs, and private sector | 71 (10.8%) | 55 (22%) | 41 (59.4%) | 41 (38%) | 208 (19.2%) | |
| Enhanced surveillance for returning travellers | 272 (41.4%) | 0 (0%) | 0 (0%) | 5 (4.6%) | 277 (25.6%) | |
| Average onset-to-admission interval (days) | 2.6 | 3.6 | 6.3 | 4.2 | 3.2 | <0.00001b |
| Average hospital length of stay for discharged cases (days) | 20.4 | 24.1 | 23.6 | 21.8 | 21.6 | 0.00006604b |
CHP, Centre for Health Protection; GOPC, general outpatient clinic.
a
Chi-square test.
b
Welch F-test.