Table 2

Prevalence of patients receiving at least one potentially hazardous prescribing (composite 3) by patient and practice-level characteristics and multilevel logistic regression unadjusted and adjusted ORs (95% CIs)

Variable (n at risk)% prevalence (95% CI)OR (95% CI)
UnadjustedAdjusted
Age
 <25 (128 141)4 (3.9 to 4.1)11
 25–34 (118 374)9.9 (9.8 to 10.1)2.62 (2.53 to 2.71)2.22 (2.14 to 2.30)
 35–44 (115 374)13.9 (13.7 to 14.1)3.89 (3.77 to 4.02)2.34 (2.26 to 2.42)
 45–54 (135 518)17.7 (17.5 to 17.9)5.22 (5.06 to 5.38)2.03 (1.96 to 2.09)
 55–64 (134 562)19.7 (19.5 to 19.9)5.89 (5.71 to 6.07)1.60 (1.55 to 1.65)
 65–74 (120 225)19.5 (19.3 to 19.7)5.92 (5.74 to 6.11)1.16 (1.12 to 1.20)
 >74 (130 459)22.9 (22.6 to 23.1)7.41 (7.18 to 7.64)1.11 (1.08 to 1.15)
Sex
Male (400 029)12.2 (12.1 to 12.3)11
 Female (482 624)18.2 (18.1 to 18.3)1.6 (1.58 to 1.62)1.43 (1.41 to 1.45)
Number of drugs on repeat prescription
0 or 1 (361 502)3.7 (3.6 to 3.7)11
2–4 (232 723)13.2 (13 to 13.3)3.94 (3.86 to 4.03)3.99 (3.91 to 4.08)
5–7 (133 179)23.4 (23.2 to 23.6)7.98 (7.81 to 8.15)9.16 (8.95 to 9.38)
8–10 (80 072)32.5 (32.2 to 32.8)12.55 (12.26 to 12.84)15.52 (15.12 to 15.93)
>10 (75 177)47.4 (47.1 to 47.8)23.54 (23.01 to 24.08)30.22 (29.44 to 31.02)
List size
<6000 (130 159)16.2 (16 to 16.4)11
6001–9000 (270 949)16.4 (16.2 to 16.5)1.04 (0.97 to 1.12)1.03 (0.98 to 1.08)
9001–12 000 (210 388)15.6 (15.5 to 15.8)0.99 (0.91 to 1.08)1.02 (0.96 to 1.08)
>12 000 (271 157)14.1 (14 to 14.3)0.88 (0.81 to 0.96)1.01 (0.95 to 1.07)
Practice-level index of multiple deprivation quintile
1 least deprived (151 968)13.2 (13.1 to 13.4)11
2 (140 183)15.3 (15.1 to 15.5)1.19 (1.08 to 1.31)1.08 (1.01 to 1.15)
3 (169 054)15 (14.8 to 15.2)1.18 (1.07 to 1.29)1.03 (0.96 to 1.09)
4 (195 532)16.3 (16.1 to 16.4)1.31 (1.19 to 1.43)1.08 (1.01 to 1.15)
5 most deprived (225 916)16.8 (16.7 to 17)1.37 (1.25 to 1.51)1.10 (1.03 to 1.17)
Country
England (247 545)13 (12.8 to 13.1)11
Northern Ireland (35 773)22 (21.6 to 22.5)1.91 (1.67 to 2.18)1.47 (1.33 to 1.63)
Scotland (328 773)16.9 (16.8 to 17.1)1.34 (1.26 to 1.43)1.17 (1.11 to 1.23)
Wales (270 562)15.1 (15 to 15.3)1.19 (1.11 to 1.28)0.95 (0.91 to 1.00)