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. 2010 Oct 12;341:c5004. doi: 10.1136/bmj.c5004

Table 4.

 Relation between potential explanatory variables and each outcome in multilevel models

Variables Overall satisfaction—patient level mean 0.00 (SD 0.85) Ability to get an appointment—patient level mean −0.05 (SD 0.81) Access—patient level mean 63.10 (SD 17.75) Communication—patient level mean 83.10 (SD 17.50)
Coefficient (95% CI) P value Coefficient (95% CI) P value Coefficient (95% CI) P value Coefficient (95% CI) P value
Practice level
List size (per 1000 patients) 0.01 (0.00 to 0.01) 0.32 0.13 (0.05 to 0.21) 0.001 0.82 (−1.23 to 2.86) 0.44 0.68 (−0.49 to 1.85) 0.25
No of full time equivalent GPs −0.07 (−0.19 to 0.05) 0.24 −0.21 (−0.36 to −0.06) 0.01 −3.43 (−7.33 to 0.47) 0.08 −1.55 (−3.8 to 0.70) 0.18
Advanced access practice* 0.06 (−0.09 to 0.21) 0.41 0.31 (0.12 to 0.50) <0.001 3.95 (−1.01 to 8.92) 0.12 0.70 (−2.04 to 3.45) 0.62
Ex-fundholding practice* 0.02 (−0.12 to 0.16) 0.79 0.17 (−0.01 to 0.34) 0.06 0.40 (−4.19 to 4.99) 0.86 −1.14 (−3.64 to 1.35) 0.37
QOF points (log)† 0.02 (−0.15 to 0.20) 0.80 0.25 (0.02 to 0.48) 0.03 1.91 (−3.94 to 7.76) 0.52 3.43 (0.13 to 6.74) 0.04
PMS practice* −0.11 (−0.28 to 0.05) 0.19 0.11 (−0.11 to 0.32) 0.33 −3.43 (−8.97 to 2.11) 0.23 1.30 (−1.79 to 4.39) 0.41
Training practice* 0.14 (−0.01 to 0.29) 0.07 −0.02 (−0.22 to 0.18) 0.85 2.83 (−2.30 to 7.96) 0.28 −0.38 (−3.23 to 2.47) 0.79
Practice receives dispensing payments* 0.13 (−0.06 to 0.32) 0.18 −0.12 (−0.37 to 0.12) 0.33 4.10 (−2.42 to 10.61) 0.22 0.78 (−2.75 to 4.30) 0.67
Doctor level
Male sex* 0.07 (0.00 to 0.13) 0.04 0.03 (−0.03 to 0.09) 0.32 1.25 (−0.17 to 2.67) 0.08 1.38 (−0.40 to 3.16) 0.13
Years since qualification 0.00 (0.00 to 0.01) 0.32 0.00 (−0.01 to 0.00) 0.32 0.00 (−0.08 to 0.08) 1.00 −0.11 (−0.21 to −0.01) 0.04
UK qualified* 0.08 (−0.01 to 0.17) 0.07 −0.04 (−0.12 to 0.05) 0.41 −0.17 (−2.20 to 1.86) 0.87 4.36 (1.81 to 6.90) <0.001
Patient level
Age (years) 0.01 (0.00 to 0.01) <0.001 0.00 (0.00 to 0.00) 1.00 0.09 (0.06 to 0.12) <0.001 0.11 (0.07 to 0.14) <0.001
Male sex* −0.02 (−0.07 to 0.03) 0.44 −0.10 (−0.14 to −0.05) <0.001 1.25 (0.25 to 2.25) 0.01 0.39 (−0.64 to 1.43) 0.46
White ethnicity* 0.13 (−0.03 to 0.29) 0.12 0.13 (−0.02 to 0.28) 0.09 −0.07 (−3.29 to 3.15) 0.96 4.56 (1.25 to 7.87) 0.01
Housing status: owner/occupier* 0.01 (−0.04 to 0.07) 0.68 0.03 (−0.02 to 0.08) 0.20 −1.20 (−2.32 to −0.08) 0.03 1.68 (0.53 to 2.84) <0.001
Employed* −0.05 (−0.10 to 0.01) 0.10 −0.06 (−0.11 to 0.00) 0.03 −1.91 (−3.04 to −0.77) <0.001 −0.24 (−1.41 to 0.93) 0.69

For each outcome measure, higher scores represent greater satisfaction.

GP=general practitioner; PMS=Personal Medical Services; QOF=quality and outcomes framework.

*Binary variable: yes=1, no=0.

†QOF scores were log transformed because of skewed distribution.