Table 3

Presenting signs and initial investigations and the percentage that were abnormal in patients hospitalised with pandemic H1N1 infection during the first pandemic wave

ObservationsnMeanRangeInterquartile rangeLevel of abnormality%
Temperature (°C)
Children18338.035.3–41.436.0–40.137.1–37.922
≥38.050
Adults34439.035.1–40.235.9–40.337.1–37.924
≥38.053
Pulse (rate/min)
Children9713754–24089–184> Normal*63
Adults21810754–18462–155>8587
Pulse (respirations/min)
Children943718–9820–66> Normal30
Adults2052310–4414–40>3033
Systolic BP (mmHg)
Children3210683–12693–119< Normal13
Adults21612568–19184–185<11024
Diastolic BP (mmHg)
Children336039–9042–77< Normal36
Adults2177132–12143–100<6532
C-reactive protein (mg/l)
Children98601–3224–14631–9919
≥1008
Adults208571–3221.5–27431–9931
≥10018
White cell count (×109/l)
Adults and children4259.01.1–38.01.1–32.9>11.017
Children102443–16319–82>1950
Adults285915–8007–611>2003
Urea (μmol/l)
Children1047.20.6–1061.1–40>6.414
Adults2867.30.9–1301.5–56>6.718
Alanine transaminase (IU/l)
Children7042.72–3937–177>4019
Adults17936.38–16710–127>3534
Spo2 (%, breathing room air)
Children17595.954–10080–100<94%16
Adults33495.166–10060–100<94%24
  • * See Methods for derivation of abnormal values in children.

  • Spo2, peripheral oxygen saturation.