Variable | N | Number of events | Person years per 1000 | Rate of undetectable VL (95% CI) | 95% CI | HR | 95% CI | P – value |
---|---|---|---|---|---|---|---|---|
Age group | ||||||||
 0–5 (ref) | 269 | 105 | 4.72 | 22.27 | 18.39–26.96 |  |  |  |
 6–15 | 83 | 31 | 1.07 | 29.03 | 20.42–41.28 | 1.35 | 0.90–2.01 | 0.144 |
 15–18 | 15 | 9 | 0.20 | 45.43 | 23.64–87.32 | 2.32 | 1.17–4.60 | 0.016* |
CD4 count (cells/μl) | ||||||||
  < 500 (ref) | 109 | 35 | 1.43 | 24.40 | 17.52–33.99 |  |  |  |
  > = 500 | 258 | 110 | 4.54 | 24.19 | 20.07–29.16 | 0.93 | 0.63–1.35 | 0.688 |
Timing | ||||||||
 Beyond 7 days (ref) | 187 | 75 | 3.77 | 19.90 | 15.87–24.95 |  |  |  |
 Within 7 days | 180 | 70 | 2.21 | 31.64 | 25.03–39.99 | 1.88 | 1.35–2.62 | 0.001* |