Table 3.

The logistic model for adjusted ORs for null body mass index recording compared with valid body mass index recording

	Odds of null BMI recording (95% CI)	Pvalue
Sex (Ref: Female)
Male	1.58 (1.57 to 1.59)	<0.0001
Age band (Ref: 18–24)
25–34	0.66 (0.65 to 0.67)	<0.0001
35–44	0.62 (0.61 to 0.63)	<0.0001
45–54	0.53 (0.52 to 0.54)	<0.0001
55–64	0.49 (0.49 to 0.50)	<0.0001
65–74	0.47 (0.46 to 0.48)	<0.0001
75–84	0.62 (0.60 to 0.63)	<0.0001
85–94	0.90 (0.88 to 0.93)	<0.0001
95+	1.49 (1.38 to 1.61)	<0.0001
Deprivation (Ref: Least deprived)
2	0.98 (0.97 to 1.00)	>0.05
3	0.97 (0.95 to 0.98)	<0.0001
4	0.89 (0.88 to 0.90)	<0.0001
5 Most deprived	0.83 (0.82 to 0.84)	<0.0001
Hypertension (Ref: None)
Hypertension	0.76 (0.75 to 0.77)	<0.0001
Serious mental illness (Ref: None)
Serious mental illness	0.62 (0.59 to 0.64)	<0.0001
Multimorbidity (Ref: 0 or 1 Long-term conditions)
Multimorbidity	0.39 (0.39 to 0.40)	<0.0001

BMI, body mass index.