Table 4.
Risk Factors for Molecular Detection of Respiratory Syncytial Virus A
| Risk Factor | Total N | RSV-A+ (%) | Unadjusted OR (95% CI) | Adjusted ORa (95% CI) |
|---|---|---|---|---|
| Approximate Age Quartiles | ||||
| 1 month–1 year | 179b | 40 (22.3) | 22.9 (5.4–96.4) | 27.7 (6.4–120.1) |
| 1–2 years | 105 | 28 (26.7) | 28.9 (6.7–124.5) | 33.8 (7.6–150.8) |
| 2–18 years | 154 | 15 (9.7) | 8.6 (1.9–38.2) | 9.6 (2.1–43.8) |
| >18 years | 161 | 2 (1.2) | Ref. | Ref. |
| Household Size Quartiles | ||||
| 0–3 | 161 | 22 (13.7) | 1.2 (0.6–2.3) | 2.0 (0.9–4.3) |
| 4–5 | 177b | 19 (10.7) | 0.9 (0.4–1.8) | 1.1 (0.5–2.3) |
| ≥8 | 128 | 28 (21.9) | 2.0 (1.0–4.0) | 2.4 (1.1–5.0) |
| 6–7 | 133 | 16 (12.0) | Ref. | Ref. |
| Month | ||||
| June 15–July 14 | 97 | 28 (28.9) | 8.1 (1.83–35.9) | 7.2 (1.6–33.5) |
| July 15–August 14 | 51 | 9 (17.6) | 4.3 (0.9–21.1) | 4.9 (0.9–25.6) |
| August 15–September 14 | 41 | 5 (12.2) | 2.8 (0.5–15.2) | 3.6 (0.6–21.2) |
| September 15–October 14 | 53 | 8 (15.1) | 3.6 (0.7–17.7) | 3.2 (0.6–16.9) |
| October 15–November 14 | 46b | 7 (15.2) | 3.6 (0.7–18.4) | 4.8 (0.9–26.8) |
| December 15–January 14 | 43 | 2 (4.7) | 1.0 (0.1–7.3) | 1.1 (0.1–8.7) |
| January 15–February 14 | 71 | 5 (7.0) | 1.5 (0.3–8.2) | 1.5 (0.3–8.5) |
| February 15–March 14 | 40 | 3 (7.5) | 1.6 (0.3–10.3) | 1.3 (0.2–8.4) |
| March 15–April 14 | 43 | 9 (20.9) | 5.3 (1.1–26.2) | 4.0 (0.8–20.7) |
| April 15–May 14 | 72 | 7 (9.7) | 2.2 (0.4–10.9) | 1.7 (0.3–9.2) |
| November 15–December 14 | 42 | 2 (4.8) | Ref. | Ref. |
Abbreviations: CI, confidence interval; OR, odds ratio; Ref., reference; RSV-A, respiratory syncytial virus A.
aAdjusted for age quartiles, household size quartile, month of enrollment.
bOne pediatric patient specimen destroyed, assay results out of n = 599.