Table 1

Predictors of disenrollment - unadjusted (Model 1) and adjusted regression (Model 2)
Unadjusted (single fixed Adjusted model*
effect) model (Model 1) (Model 2)
GP Patient Survey Items
*Rate Ratio p-value *Rate Ratio p-value
(95% CI) (95% CI)
5th vs. 95th 5th vs. 95th
percentile percentile
Helpful receptionists 1.34 (1.25, 1.44) <0.001 0.82 (0.75, 0.89) <0.001
Getting appointment within 2 days 1.62 (1.51, 1.73) <0.001 1.09 (1.02, 1.16) 0.016
Booking appointment in advance 1.07 (0.99, 1.14) 0.076 1.07 (1.00, 1.14) 0.055
Seeing preferred doctor 0.77 (0.72, 0.83) <0.001 0.90 (0.84, 0.96) 0.001
Satisfaction with opening hours 1.64 (1.53, 1.76) <0.001 0.65 (0.60, 0.70) <0.001
Doctor/patient communication 4.63 (4.35, 4.94) <0.001 1.03 (0.87, 1.21) 0.782
Confidence and trust in doctor 4.85 (4.56, 5.16) <0.001 1.26 (1.06, 1.49) 0.011
Nurse/patient communication 1.71 (1.60, 1.84) <0.001 0.90 (0.84, 0.96) <0.001
Overall satisfaction 3.91 (3.66, 4.18) <0.001 3.46 (2.86, 4.18) <0.001
Doctors’ Characteristics
Rate Ratio (95% CI) 95th vs.5th p-value Rate Ratio (95% CI) 95th vs. 5th p-value
percentile
percentile
Mean years since FP qualification 3.58 (3.35, 3.83) <0.001 1.08 (1.01, 1.15) 0.015
Proportion of male FPs 2.21 (2.07, 2.36) <0.001 1.00 (0.95, 1.05) 0.807
Proportion of overseas qualified FPs 3.52 (3.35, 3.71) <0.001 0.96 (0.94, 0.98) <0.001
Patients per full time equivalent FP 1.88 (1.78, 1.98) <0.001 0.84 (0.81, 0.88) <0.001
Practice Characteristics
Rate Ratio (95% CI) p-value Rate Ratio (95% CI) p-value
Number of FPs:
1 4.29 (4.05, 4.56) <0.001 2.75 (2.56, 2.95) <0.001
2 2.92 (2.76, 3.09) 2.10 (1.99, 2.22)
3 2.03 (1.91, 2.16) 1.68 (1.59, 1.76)
4 1.52 (1.43, 1.61) 1.42 (1.35, 1.49)
5 1.23 (1.16, 1.31) 1.19 (1.13, 1.25)
6-9 Ref Ref
10 or More 0.79 (0.73, 0.86) 0.81 (0.76, 0.87)
Number of practices within 1km:
0 Ref <0.001 Ref <0.001
1 1.53 (1.44, 1.62) 1.21 (1.16, 1.26)
2 1.68 (1.57, 1.79) 1.21 (1.16, 1.27)
3 1.94 (1.81, 2.09) 1.23 (1.17, 1.30)
4 2.39 (2.20, 2.59) 1.32 (1.24, 1.40)
5 2.29 (2.09, 2.50) 1.24 (1.16, 1.32)
6-9 2.68 (2.49, 2.88) 1.36 (1.28, 1.44)
10 or More 2.97 (2.61, 3.38) 1.40 (1.27, 1.55)

* Also adjusted for practice level patient demographics

Contains 5th percentile

Contains 95th percentile

* Rate ratios are the relative increase in disenrollment rate associated with moving from the 95th to 5th percentile for patient experience measures, and moving from the 5th to the 95th percentile for other continuous variables. Rate ratio > 1 implies:

• For patient experience - disenrollment more likely at worse performing practices compared to better practices

• For doctor characteristics - disenrollment more likely at practices with higher values compared to practices with lower values

• For practice characteristics - disenrollment more likely compared to reference category

Nagraj et al.

Nagraj et al. BMC Family Practice 2013 14:89   doi:10.1186/1471-2296-14-89

Open Data