Table 4.

Binary logistic regressions exploring associations between practitioner characteristics and (1) frequency of calculating patient BMI (all patients) and (2) frequency of providing weight management advice to obese patients

Variables/Reference categories	How often calculate patient BMI?1,3,5			How often provide weight management advice to obese patients? 2,4,6
	AOR	95% CI	p	AOR	95% CI	p
Gender
Female	REF	–	–	REF	–	–
Male	0.71	0.55–0.91	0.006	0.60	0.45–0.80	< 0.001
Age
18–39 years old	REF	–	n.s.	REF	–	n.s.
40–59 years old (vs younger)	1.06	0.76–1.49	n.s.	1.09	0.74–1.59	n.s.
> 60 years old (vs younger)	1.04	0.65–1.64	n.s.	0.92	0.54–1.54	n.s.
Country
England	REF	–	n.s.	REF		0.006
Scotland (vs. Eng)	0.69	0.50–0.97	0.030	0.76	0.53–1.10	n.s.
Wales (vs. Eng)	1.17	0.74–1.86	n.s.	0.96	0.57–1.63	n.s.
Northern Ireland (vs. Eng)	1.00	0.56–1.66	n.s.	0.40	0.24–0.68	0.001
Days in practice in week
1–2 days	REF	–	< 0.001	REF	–	0.010
3–4 days (vs. less often)	1.64	1.12–2.44	0.013	1.28	0.83–1.98	n.s.
5–6 days (vs. less often)	1.70	1.30–2.21	< 0.001	1.57	1.16–2.12	0.003
Health professional role
Practice Nurse	REF	–	–	REF	–	–
General practitioner	0.27	0.21–0.34	< 0.001	0.63	0.47–0.85	0.002
Years qualified
0–5 years	REF	–	n.s.	REF	–	n.s.
6–10 years (vs. more recent)	1.27	0.84–1.92	n.s.	0.71	0.44–1.16	n.s.
11–15 years (vs. more recent)	1.13	0.82–1.57	n.s.	1.06	0.73–1.55	n.s.
16–20 years (vs. more recent)	1.26	0.87–1.82	n.s.	0.84	0.55–1.27	n.s.
> 20 years (vs. more recent)	1.13	0.83–1.52	n.s.	1.07	0.75–1.53	n.s.
List size
< 2000 patients.	REF	–	n.s.	REF	–	n.s.
2000–5000 patients (vs less)	1.62	0.94–2.79	n.s.	1.85	1.00–3.41	n.s.
5000–10,000 patients (vs less)	1.22	0.89–1.68	n.s.	1.22	0.85–1.75	n.s.
10,000–20,000 patients (vs  less)	1.11	0.86–1.42	n.s.	1.04	0.78–1.38	n.s.
> 20,000 patients (vs less)	1.08	0.69–1.69	n.s.	1.21	0.71–2.07	n.s.

Notes

Base = All participants; AOR = Adj. Odds Ratio; 95% CI = 95% Confidence Interval; n.s. = non-significant (p > 0.05)

Data are not weighted, as country included as covariate

¹ DV = How often calculate BMI of patient (Always/often = 1; Less often = 0).

² DV = How often provide weight management advice to obese patients (Always/often = 1; Less often = 0).

Model summaries for final block:

³ Test of coefficients, χ²(17) = 270.13,p < 0.001; Hosmer & Lemeshow, χ²(8) = 4.29, p = 0.83, Nagelkerke R² = 0.17.

⁴ Test of coefficients, χ²(17) = 79.54,p < 0.001; Hosmer & Lemeshow, χ²(8) = 5.78, p = 0.67, Nagelkerke R² = 0.06.

⁵ Cases excluded due to missing data on one or more variable (n = 68).

⁶ Cases excluded due to missing data on one or more variable (n = 68).