Table 3

Care homes in high and low prescribing quintiles (baseline sample)

QuintileRR (95% CI)
Care home characteristicsTotal populationQ1 (lowest)Q5 (highest)Q5/Q1
Home type
 Residential home—n (%)3703 (44.3)831 (46.3)737 (51.5)1.11 (1.04 to 1.19)
 Nursing home—n (%)3422 (41.0)682 (38.0)561 (39.2)1.03 (0.95 to 1.13)
 Dual registered—n (%)1232 (14.7)282 (15.7)133 (9.3)0.59 (0.49 to 0.72)
 Allp<0.001
 Registered for dementia3359 (48.0)335 (22.3)913 (75.4)3.38 (3.06 to 3.73)
 Registered for old age, not dementia3644 (52.0)1168 (77.7)298 (24.6)0.32 (0.29 to 0.35)
 Allp<0.001
Area deprivation
 Deprived neighbourhood—n (%)459 (6.1)48 (2.9)219 (17.1)5.89 (4.35 to 7.99)
 Non-deprived neighbourhood—n (%)7089 (93.9)1598 (97.1)1059 (82.9)0.85 (0.83 to 0.88)
 Allp<0.001
Practices serving home
 1 GP practice—n (%)866 (10.4)180 (10.0)68(4.8)0.48 (0.37 to 0.63)
 2–3 GP practices—n (%)3011 (36.0)729 (40.6)387(27.0)0.67 (0.60 to 0.74)
 >4 GP practices—n (%)4480 (53.6)886 (49.4)976 (68.2)1.38 (1.30 to 1.46)
 Allp<0.001
Care home size*
 Small—n (%)545 (6.5)183 (10.2)95 (6.6)0.65 (0.51 to 0.82)
 Medium—n (%)2887 (34.6)554 (30.9)643(44.9)1.45 (1.33 to 1.59)
 Large—n (%)4925 (58.9)1058 (58.9)693(48.5)0.82 (0.77 to 0.88)
 Allp<0.001
Age/gender of residents835717951431
 Women—n (%)6011 (71.8)1343 (74.8)922 (64.4)0.86 (0.82 to 0.90)
 Age 65–74—n (%)744 (8.9)129 (7.2)181 (12.6)1.75 (1.41 to 2.17)
 Age 75–84—n (%)2911 (34.8)554 (30.9)564 (39.4)1.28 (1.16 to 1.40)
 Age >85—n (%)4392 (52.5)1071 (59.7)536 (37.5)0.63 (0.58 to 0.68)
 Allp<0.001
  • p Values in the RR column are from Pearson's χ2 test of associated between the characteristic variable and the first and fifth quintile indicator.

  • *Small ≤24 residents; medium 25–39 residents; large ≥40 residents.

  • GP, general practitioner; NA, not applicable; RR, Rate ratio.