Table 1

Sample size and occurrence of an adverse drug event

Collection period 1, 16 January–19 February 2007Collection period 2, 17 July–20 August 2007Collection period 3, 25 September–27 October 2007Collection period 4, 19 January–22 February 2010Collection period 5, 23 February–29 March 2010Consolidated data
Number of GPs97901079196482
Number of patients aged 45+148513881655135116397518
Patients with at least one ADE206146181167171871
Per cent (95% CI)13.9 (11.3 to 16.4)10.5 (8.3 to 12.8)10.9 (8.8 to 13.0)12.4 (9.8 to 14.9)10.4 (8.5 to 12.3)11.6 (10.6 to 12.6)
  • ADE, adverse drug event; GP, General Practitioner.