Table 2. Factors associated with containment delay, Hong Kong, 23 January–13 February 2020 (n = 49 cases)a .
| Factors | Regression coefficient (95% confidence interval) | ||
|---|---|---|---|
| Model 1 (n = 49)a |
Model 2 (n = 49)a |
Model 3 (n = 35)a,b |
|
| Age group in years | |||
| 22–39 | Reference | Reference | Reference |
| 40–69 | 1.51 days (−0.90 to 3.93) | 1.69 days (−0.47 to 3.86) | −0.57 days (−3.26 to 2.13) |
| ≥ 70 | 2.54 days (−0.49 to 5.58) | 2.18 days (−0.53 to 4.88) | 4.08 days (−0.05 to 8.21) |
| Sex | |||
| Female | Reference | Reference | Reference |
| Male | −1.31 days (−3.25 to 0.62) | −0.44 days (−2.21 to 1.33) | −3.16 days (−5.39 to −0.92) |
| Case notification period start and end in day/month | |||
| 23/01 to 29/01 | Reference | Not applicable | Not applicable |
| 30/01 to 06/02 | 4.61 days (1.42 to 7.81) | Not applicable | Not applicable |
| 07/02 to 13/02 | 6.05 days (3.21 to 8.90) | Not applicable | Not applicable |
| Potential source of infection | |||
| Local | Not applicable | Reference | Not applicable |
| Imported | Not applicable | −6.08 days (−8.26 to −3.91) | Not applicable |
| Number of doctor consultationsc before isolation | |||
| Number of doctor consultationsc before isolation | Not applicable | Not applicable | 2.08 days (1.16 to 2.99) |
| Presence of comorbidities | |||
| No | Not applicable | Not applicable | Reference |
| Yes | Not applicable | Not applicable | 1.52 days (−1.06 to 4.10) |
a Cases intercepted at borders (cases 1 and 7) or quarantined during symptom onset (cases 8 and 15) were excluded.
b Cases with missing number of doctor consultations before isolation (cases 30–36) or missing comorbidity (cases 9-12, 29-36, 42 and 46) were excluded.
c From community health clinics or hospital emergency departments.
The date range covered by the table, from 23 January to 13 February, corresponds to the period when the 49 cases were reported. Model 1 explores the association of the containment delay and different periods of the outbreak after adjusting for age and sex. Model 2 explores the association between the containment delay and the potential source of infection after adjusting for age and sex. Model 3 explores the association between the containment delay and the number of doctor consultations before isolation after adjusting for age, sex and presence of comorbidities.