Table 1

Demographic characteristics of 631 UK patients hospitalised with pandemic H1N1 infection during the first pandemic wave compared with source population data

n (%)Population comparison* (%)
Sex: female320 (51)51.3
Age (years)
 <142 (7)1.2
 1–459 (9)5.2
 5–15125 (20)14.2
 16–24114 (18)11.7
 25–3483 (13)16.9
 35–4475 (12)15.4
 45–5468 (11)12.3
 55–6432 (5)9.4
 65–7422 (3)7.3
 >7511 (2)6.4
Ethnicity
 White202 (38)81.9
 Mixed7 (1)2.1
 Asian/Asian British169 (31)8.0
 Black/Black British100 (19)6.3
 Chinese and other59 (11)1.7
  • Data are number (%) unless otherwise indicated.

  • * Data for comparison of sex, age structure and ethnicity (London, East Midlands and Northern Ireland combined) were obtained from the Office for National Statistics (www.statistics.gov.uk) and Northern Ireland Statistics and Research Agency (www.nisra.gov.uk): National Census 2001 data: KS01 sex, KS02 age structure, KS06 ethnicity and corresponding census area statistics (CAS) data: UV03, UV04 and UV09 (available on Neighbourhood Statistics and www.nomis.co.uk) for further subdivisional data.

  • Information on ethnicity was unavailable for 94 cases; assessments of ethnicity are based on 537 cases.