Table 7

Respondent bias assessment based on dispensing volumes

NHS dispensing monthly (March 2018) statisticsNumber of prescription forms (nominal)Number of prescription items (nominal)
Mean
 (England) Population3564 (3564±0)7132 (7132±0)
 Invited3633 (3564+69)7366 (7132+234)
 Respondent3693 (3564+129)7444 (7132+312)
 Non-respondent (excluding closures and abatements)3666 (3564+102)7444 (7132+312)
SD
 (England) Population2692 (2692±0)5167 (5167±0)
 Invited2053 (2692–639)4296 (5167–871)
 Respondent2154 (2692–538)4569 (5167–598)
 Non-respondent (excluding closures and abatements)1999 (2692–693)4171 (5167–996)
  • NHS, National Health Service.