Table 1 Characteristics of locally-acquired and imported COVID-19 cases in Singapore, 23 January to 17 March 2020
Characteristics | All | Locally-acquired | Imported | P-value^ |
|---|---|---|---|---|
(N = 258) | (N = 161) | (N = 97) | ||
Age in years, median (IQR) | 45 (34–57) | 50 (35–61) | 40 (31–53) | 0.005 |
Male, n (%) | 146 (56.6) | 83 (51.6) | 63 (64.9) | 0.039 |
Singapore resident, n (%) | 180 (69.8) | 138 (85.7) | 42 (43.3) | < 0.001 |
Number of visits before admission, median (IQR) | 1 (1–2) | 1 (1–2) | 1 (1–1) | 0.009 |
Number of visits before admission, n (%) | < 0.001 | |||
0 | 45 (17.4) | 33 (20.5) | 12 (12.4) | |
1 | 122 (47.3) | 55 (34.2) | 67 (69.1) | |
2 | 50 (19.4) | 38 (23.6) | 12 (12.4) | |
3 | 30 (11.6) | 25 (15.5) | 5 (5.2) | |
≥ 4 | 11 (4.3) | 10 (6.2) | 1 (1.0) | |
Days from symptom onset to admission, median (IQR) | 5 (3–8) | 6 (4–9) | 4 (2–7) | < 0.001 |
Cases with at least 1 visit | All cases | Locally-acquired | Imported | P-value^ |
(n = 213) | (n = 128) | (n = 85) | ||
At least 1 visit, n (%) | ||||
Primary care clinics | 163 (76.5) | 115 (89.8) | 48 (56.5) | < 0.001 |
ED | 87 (40.8) | 34 (26.6) | 53 (62.4) | < 0.001 |
Timing of first visit (for those with at least 1 visit), median (IQR) | 2 (1–4) | 2 (1–3) | 2 (1–4) | 0.466 |
Timing of first visit (for those with at least 1 visit), n (%) | 0.907 | |||
Day 1 | 61 (28.6) | 37 (28.9) | 24 (28.2) | |
Day 2 | 67 (31.5) | 43 (33.6) | 24 (28.2) | |
Day 3 | 30 (14.1) | 17 (13.3) | 13 (15.3) | |
Day 4 | 21 (9.9) | 13 (10.2) | 8 (9.4) | |
Day 5 | 14 (6.6) | 8 (6.3) | 6 (7.1) | |
Day 6 or later | 20 (9.4) | 10 (7.8) | 10 (11.8) | |