Table 2.
RT-PCR positivity in 70 household members and associated characteristics, with SARS-CoV-2 spike IgG positivity for comparison.
| N | RT-PCR positive HM n /N (%)* |
Adjusted odds ratio (95% CI)⁎⁎ |
p⁎⁎ | N | Spike IgG positive HM n/N (%)* |
Adjusted odds ratio (95% CI)⁎⁎ |
p⁎⁎ | |
|---|---|---|---|---|---|---|---|---|
| Overall | 70 | 32 /70 (46%) | 179 | 81/179 (45%) | ||||
| Sex | ||||||||
| Male | 34 | 15/34 (44%) | 0.96 (0.24 - 3.91) | 0.95 | 80 | 38/80 (48%) | 1.02 (0.48 - 2.15) | 0.963 |
| Female | 36 | 17/36 (47%) | 1 (ref) | – | 99 | 43/99 (43%) | 1 (ref) | – |
| Age, years | ||||||||
| 0–10 | 7 | 1/7 (14%) | 0.28 (0.02 - 3.28) | 0.31 | 23 | 11/23 (48%) | 1.31 (0.33 - 5.22) | 0.706 |
| 11–20 | 9 | 2/9 (22%) | 0.41 (0.05 - 3.02) | 0.38 | 34 | 9/34 (26%) | 0.59 (0.20 - 1.70) | 0.326 |
| 21–30 | 19 | 8/19 (42%) | 1 (ref) | – | 36 | 15/36 (42%) | 1 (ref) | – |
| 31–40 | 8 | 4/8 (50%) | 2.20 (0.27 - 18.17) | 0.46 | 18 | 11/18 (61%) | 3.16 (0.80 - 12.51) | 0.101 |
| 41–50 | 9 | 5/9 (56%) | 3.23 (0.31 - 33.26) | 0.32 | 24 | 9/24 (38%) | 1.01 (0.30 - 3.47) | 0.984 |
| 51–60 | 11 | 6/11 (55%) | 2.42 (0.31 - 19.17) | 0.40 | 29 | 15/29 (52%) | 1.62 (0.47 - 5.65) | 0.446 |
| >60 | 7 | 6/7 (86%) | 8.86 (0.62 - 126.23) | 0.11 | 15 | 11/15 (73%) | 2.58 (0.49 - 13.54) | 0.262 |
| Symptoms | ||||||||
| Yes | 66 | 32/66 (48%) | - | – | 130 | 73/130 (56%) | – | – |
| No | 4 | 0/4 (0.0%) | - | – | 49 | 8/49 (16%) | – | – |
| RT-PCR | ||||||||
| Positive | – | - | - | – | 32 | 28/32 (88%) | – | – |
| Negative | – | - | - | – | 38 | 16/38 (42%) | – | – |
| Household size | ||||||||
| 2 | 17 | 11/17 (65%) | 1.66 (0.25 - 10.99) | 0.60 | 44 | 25/44 (57%) | 1.40 (0.49 - 3.98) | 0.527 |
| 3 | 15 | 6/15 (40%) | 068 (0.13 - 3.49) | 0.65 | 36 | 16/36 (44%) | 1.32 (0.42 - 4.19) | 0.639 |
| ≥4 | 38 | 15/38 (39%) | 1 (ref) | – | 99 | 40/99 (40%) | 1 (ref) | – |
Abbreviations: CI: confidence interval; RT-PCR: reverse transcription polymerase chain reaction.
⁎
n SARS-CoV-2 (RT-PCR and spike IgG) positive household members. N total sample tested.
⁎⁎
Adjusted odds ratio and P values was calculated by generalized estimating equation (GEE) analysis including household member characteristics (sex and age), index patient charachterisitics (sex, age, history of cough, fever, dyspnoea, any comorbidities, inhalation steroid medication, and smoking status), and household size. P values < 0.05 marked in bold were considered statistically significant.