Table 4.
Factors Associated with Achieving Antibody Level >1:40 at 6 Months among All Participants with a Prevaccination level of <1:10
| Factor1 | Endpoint achieved (n=33) | Endpoint not achieved (n=49) | Adjusted OR (95% CI)2 | Adjusted p- value2 |
|---|---|---|---|---|
| HIV status | 0.003 | |||
| Positive | 13/33 (39%) | 16/49 (33%) | 0.19 (0.06, 0.59) | |
| Negative | 20/33 (61%) | 33/49 (67%) | 1.0 | |
| Age, years | 35 (30–40) | 35 (26–45) | 0.99 (0.93, 1.04 | 0.64 |
| Ethnicity | 0.27 | |||
| Caucasian | 21/33 (64%) | 28/49 (57%) | 1.0 | |
| African American | 8/33 (24%) | 11/49 (22%) | 1.81 (0.52, 6.48) | |
| Other | 4/33 (12%) | 10/49 (20%) | 0.47 (0.1, 1.82) | |
| Number of influenza vaccines in last three years | 0.29 | |||
| <3 | 10/33 (30%) | 13/49 (27%) | 1.0 | |
| 3 | 20/33 (70%) | 36/49 (73%) | 0.56 (0.18, 1.65) | |
| Other household members | 0.45 | |||
| 0–1 | 17/33 (52%) | 27/49 (55%) | 1.0 | |
| ≥2 | 16/33 (48%) | 22/49 (45%) | 0.67 (0.23, 1.86) |
1
Factors are number (percentages) or medians (interquartile ranges)
2
Adjusted p-values are from a multiple logistic regression model and adjusted for all the variables included in the table
CI, confidence interval; OR, odds ratio