Table 1

Variation in adjusted QOF Scores by levels of nurse staffing: clinical domains.

	List size per FTE practice nurse (quintiles)^a

Domain	≤3038.01 β (95% CI)	3038.02– 3901.48 β (95% CI)	3901.49–4823.44 β (95% CI)	4823.45–6210.68 β (95% CI)	≥6210.69 β (95% CI)	χ²^b(P-value)
Asthma	0.40 (–1.66 to 2.47)	0.29 (–1.75 to 2.32)	–0.13 (–2.21 to 1.95)	0.49 (–1.56 to 2.55)	0.13 (–1.96 to 2.23)	3.94 (0.56)

COPD	2.03 (0.20 to 3.86)^c	1.85 (–0.10 to 3.81)	1.27 (–0.67 to 3.21)	1.09 (–0.88 to 3.06)	0.65 (–1.34 to 2.64)	26.91 (<0.001)

CHD	0.90 (0.18 to 1.62)^c	0.84 (0.11 to 1.58)^c	0.70 (–0.06 to 1.46)	0.56 (–0.21 to 1.33)	0.52 (–0.22 to 1.25)	15.20 (0.01)

Diabetes	1.94 (0.75 to 3.12)^c	1.78 (0.57 to 2.99)^c	1.51 (0.27 to 2.74)^c	1.43 (0.20 to 2.66)^c	1.07 (–0.15 to 2.30)	27.45(<0.001)

Hypertension	0.47 (–0.03 to 0.97)	0.42 (–0.09 to 0.92)	0.24 (–0.31 to 0.78)	0.11 (–0.44 to 0.65)	–0.06 (–0.62 to 0.50)	17.27 (0.004)

Hypothyroidism	0.77 (0.16 to 1.38)^c	0.62 (–0.01 to 1.26)	0.49 (–0.24 to 1.23)	0.49 (–0.19 to 1.17)	0.36 (–0.33 to 1.05)	10.44 (0.06)

Mental health	–0.11 (–2.18 to 1.95)	1.25 (–0.78 to 3.27)	0.24 (–1.74 to 2.22)	0.89 (–1.1 to 2.96)	0.87 (–1.17 to 2.90)	8.65 (0.12)

Stroke	0.61 (–0.22 to 1.45)	0.57 (–0.28 to 1.43)	0.29 (–0.59 to 1.16)	0.11 (–0.77 to 0.99)	0.29 (–0.58 to 1.17)	8.12 (0.15)

↵a Reference category ‘no practice nurse’.
↵b 5 degrees of freedom.
↵c Significant (P<0.05) relative to reference category. Full models can be found in Appendix 3. CHD = coronary heart disease. COPD = chronic obstructive pulmonary disease. FTE = full-time equivalent.