Table 2.
Usability and Acceptability for Home-based Antibody Self-testing
| Characteristic | LFIA1 N = 8754 n (%)a | LFIA2 N = 2957 n (%)a | P valueb |
|---|---|---|---|
| Did you attempt the antibody test? c | |||
| Yes | 8693 (99.3) | 2911 (98.4) | |
| No | 61 (0.70) | 46 (1.6) | <.001 |
| Did you successfully manage to complete the antibody test? | |||
| Yes | 8475 (97.5) | 2848 (97.8) | |
| No, I only partially completed it | 160 (1.8) | 37 (1.3) | |
| No, I did not complete any of it | 16 (0.18) | 9 (0.31) | |
| Do not know | 42 (0.48) | 17 (0.58) | .10 |
| Did you have anyone helping you to administer the test? | |||
| Yes | 2270 (26.1) | 853 (29.3) | |
| No | 6423 (73.9) | 2058 (70.7) | .001 |
| Why did you not successfully complete the antibody test? | |||
| I did not understand the instructions | 1 (0.57) | 1 (2.2) | |
| It took too long | 1 (0.57) | 0 (0.0) | |
| I did not manage to use the lancet | 11 (6.3) | 2 (4.4) | |
| I did not manage to get a blood spot / drop | 6 (3.4) | 8 (17.4) | |
| I did not manage to use the pipette | 6 (3.4) | N/A | |
| I did not manage to get enough blood on the test | 18 (10.2) | 14 (30.4) | |
| I did not manage to get the buffer on the test | 64 (36.4) | 1 (2.2) | |
| I damaged the test | 78 (44.3) | 7 (15.2) | |
| It was too fiddly for me to manage | 8 (4.6) | 5 (10.9) | |
| I did not have some of the equipment I needed | 2 (1.1) | 0 (0.0) | |
| I could not read the result | 8 (4.6) | 1 (2.2) | |
| Preference for where to perform the finger-prick antibody test | |||
| Home | 5960 (68.1) | ||
| Clinical setting | 168 (1.9) | ||
| Do not mind which one | 2596 (29.7) | ||
| Neither | 19 (0.22) | ||
| Do not know | 11 (0.13) | ||
| Preference for where to perform the finger-prick antibody test | |||
| Home | 6424 (74.4) | ||
| Community testing centre | 139 (1.6) | ||
| Do not mind which one | 2152 (24.6) | ||
| Neither | 19 (0.22) | ||
| Do not know | 20 (0.23) | ||
| Preference for where to perform the finger-prick antibody test | |||
| Home | 2146 (72.6) | ||
| Clinical setting | 64 (2.2) | ||
| Community testing centre | 712 (24.1) | ||
| Do not mind which one | 16 (0.54) | ||
| None of these | 3 (0.10) | ||
| Do not know | 16 (0.54) | ||
| Willingness to try another finger-prick antibody test | |||
| Yes | 8603 (98.3) | 2867 (97.0) | |
| No | 70 (0.80) | 60 (2.0) | |
| Do not know | 81 (0.93) | 30 (1.0) | <.001 |
| Willingness to perform finger-prick antibody test on a child (Yes) d | |||
| Children 5–11 years old (n = 1398) / (n = 465) | 1187 (84.9) | 371 (79.8) | .009 |
| Children 12–15 years old (n = 885) / (n= 301) | 841 (95.0) | 279 (92.7) | .05 |
| Children 16–17 years old (n = 557) / (n = 176) | 541 (97.1) | 167 (94.9) | .11 |
Abbreviation: LFIA, lateral flow immunoassays.
aPercentages are calculated from nonmissing values.
bP-value calculated using Pearson’s chi- squared test.
cReasons for not attempting the test included not wanting to prick their finger with a lancet, not understanding the instructions, not wanting to see their own blood, damaging the test, not wanting to know the result, and not trusting the test.
dParticipants who had children aged 5–11, 12–15, and 16–17 years were asked whether they would carry out the test on children of that age living in their households. Denominator is the number of participants who reported having children of that age living in their household.