Access to and utilisation of COVID-19 Ag-RDT among study participants (n=280), Foundation for Innovative New Diagnostics Accelerator Project, 2022, Cambodia
| Characteristics | N/N | %* | %† | 95% CI |
| Access to COVID-19 Ag-RDT | ||||
| Ever heard of Ag-RDT | ||||
| Yes | 280/280 | 100 | 100 | – |
| No | 0/280 | – | – | – |
| Ever underwent Ag-RDT | ||||
| Yes | 183/280 | 65.4 | 65.3 | 59.7 to 70.9 |
| No | 97/280 | 34.6 | 34.7 | 29.1 to 40.2 |
| Had Ag-RDT within the past 6 months | ||||
| Yes | 95/280 | 33.9 | 34.5 | 26.1 to 42.8 |
| Longer than 6 months ago and never | 185/280 | 66.1 | 65.5 | 57.1 to 73.9 |
| Obtained Ag-RDT for free within the past 12 months | ||||
| Yes | 70/280 | 25.0 | 24.7 | 18.9 to 30.5 |
| No and never at all | 210/280 | 75.0 | 75.3 | 69.5 to 81.1 |
| Last Ag-RDT obtained for free from‡ | ||||
| Public health facility | 11/70 | 15.7 | 16.7 | 4.1 to 29.2 |
| Workplace | 29/70 | 41.4 | 41.4 | 28.3 to 54.6 |
| Friends and families | 9/70 | 12.9 | 12.8 | 5 to 20.7 |
| Authorities/Phum/Sangkat | 21/70 | 30.0 | 28.8 | 13.5 to 44.2 |
| Heard (knew) of Ag-RDT from | ||||
| Workplace | 60/280 | 21.4 | 20.6 | 13.8 to 27.4 |
| Friends | 116/280 | 41.4 | 41.4 | 35.6 to 47.2 |
| Family members | 149/280 | 53.2 | 54.5 | 45.9 to 62.9 |
| Social network | 175/280 | 62.5 | 63.7 | 56.1 to 71.2 |
| Television | 108/280 | 38.6 | 39.5 | 32.7 to 46.3 |
| Healthcare workers | 14/280 | 5.0 | 5.0 | 2.4 to 7.5 |
| Authorities/Phum/Sangkat | 32/280 | 11.4 | 10.5 | 4.9 to 16.1 |
| Obtaining last Ag-RDT for free was‡ | ||||
| Easy | 63/70 | 90.0 | 90.0 | 82.9 to 97 |
| Hard | 4/70 | 5.7 | 5.7 | 0.3 to 11.1 |
| Neither hard or easy | 3/70 | 4.3 | 4.3 | 0 to 9 |
| Buying last RDT was§ | ||||
| Easy | 88/101 | 87.1 | 87.7 | 78.8 to 96.6 |
| Hard | 9/101 | 8.9 | 8.9 | 3.3 to 14.5 |
| Neither hard or easy | 4/101 | 4.0 | 3.9 | 0.1 to 7.8 |
| The cost of last Ag-RDT bought was | ||||
| Cheap | 25/101 | 24.8 | 23.7 | 11.7 to 35.7 |
| Expensive | 36/101 | 35.6 | 35.6 | 26.3 to 44.9 |
| Neither expensive or cheap | 40/101 | 39.6 | 40.9 | 29.9 to 51.9 |
| Reasons for getting last (free) Ag-RDT¶ | ||||
| Respiratory symptoms | 11/70 | 15.7 | 15.9 | 6.4 to 25.4 |
| Fever | 4/70 | 5.7 | 5.7 | 0.3 to 11.1 |
| Exposure to known positive case | 7/70 | 10.0 | 10.0 | 2.9 to 17 |
| Exposure to suspected positive case | 11/70 | 15.7 | 16.8 | 4.1 to 29.6 |
| Reserve for later use | 12/70 | 17.1 | 17.1 | 8.3 to 25.9 |
| Required for entering events/places | 29/70 | 41.4 | 41.4 | 29.2 to 53.5 |
| Utilisation of COVID-19 Ag-RDT | ||||
| Administered Ag-RDT to oneself/others within the past 12 months | ||||
| Yes | 77/280 | 27.5 | 28.0 | 20.4 to 35.7 |
| Self-administered Ag-RDT only | 34/280 | 12.1 | 12.1 | 8.2 to 16.1 |
| Administered Ag-RDT to others only | 11/280 | 3.9 | 3.9 | 1.6 to 6.2 |
| Self-administered Ag-RDT and administered it to others | 32/280 | 11.4 | 11.7 | 6.7 to 16.7 |
| Never either way | 203/280 | 72.5 | 72.0 | 64.3 to 79.6 |
| If RDT (+), the immediate next step should be** | ||||
| Seek advice from public providers | 134/280 | 47.9 | 46.3 | 38.1 to 54.5 |
| Seek advice from private providers | 25/280 | 8.9 | 9.0 | 5.5 to 12.5 |
| Seek confirmatory PCR | 12/280 | 4.3 | 4.3 | 1.9 to 6.6 |
| Retest with another Ag-RDT | 2/280 | 0.7 | 1.0 | 0 to 2 |
| Self-isolate at home | 73/280 | 26.0 | 26.1 | 20.5 to 31.6 |
| Seek medications from pharmacy | 28/280 | 10.0 | 10.0 | 6.5 to 13.5 |
| Selection of RDT depends on | ||||
| Price (cheaper, better) | 126/280 | 45.0 | 45.0 | 39.2 to 50.8 |
| Country of manufacturing | 58/280 | 20.7 | 21.2 | 15.2 to 27.2 |
| Recommendation from pharmacist | 193/280 | 68.9 | 69.4 | 62.9 to 75.9 |
| Test packaging | 44/280 | 17.1 | 11.0 | 10.3 to 23.9 |
| Nature of specimen required | 16/280 | 5.7 | 6.3 | 2.3 to 10.3 |
| Quality | 30/280 | 10.7 | 11.0 | 6.6 to 15.4 |
| RDT should be used when one has | ||||
| Respiratory symptoms and/or fever | 273/280 | 97.5 | 97.5 | 96.7 to 99.3 |
| Been exposed to positive COVDI-19 case | 3/280 | 1.1 | 1.0 | 0 to 2.3 |
| Not sure | 4/280 | 1.4 | 1.4 | 0 to 2.8 |
Note: Some categories might not add up to 100% due to rounding from mixed model.
*Row percentages reported here are raw percentages (not accounting for clustering effect of villages).
†Percentages reported here are linear model estimates (accounting for clustering effect of villages).
‡Subset to those who had obtained RDT for free within the past 12 months, single answer only.
§Subset to those who had bought Ag-RDT within the past 12 months, single answer only.
¶Subset to those who had obtained Ag-RDT for free within the past 12 months, multiple answers allowed.
**Single answer only.
Ag-RDT, antigen rapid diagnostic test.