Table 3.

Antibiotic prescribing rates by demographics and clinical characteristics and univariable and multivariable logistic regression

Codes from reviewing notes/linked data	Options		Antibiotics prescribed	Unadjusted model (n=500)		Adjusted model (n=489)
		(n)	%	OR	P value	OR	P value
Age	16–64*	373	75.4	1	.	1
	<16	79	53.2	0.37	>0.001	0.4	0.002
	65+	37	61.5	0.52	0.063	0.76	0.57
Townsend Deprivation Index Quintile (first representing lowest deprivation)	First	70	84.3	1	.	1
	Second	84	77.7	0.648	0.3	0.66	0.357
	Third	77	72.7	0.497	0.093	0.53	0.18
	Fourth	95	68.4	0.404	0.022	0.53	0.149
	Fifth	163	63.2	0.32	0.002	0.39	0.018
	Unreported	10	50	0.186	0.018	–	–
Sex	Female*	312	68.6	1	.	1
	Male	177	74.6	1.346	0.155	1.47	0.13
	Unclassified	1	100	–
Swelling	No/missing*	68	38.6	1	.	1
	Yes	421	76.1	5.056	<0.001	2.88	<0.001
Discharge	No/missing*	443	69.6	1	.	1
	Yes	46	82.6	2.074	0.07	1.09	0.847
Spreading	No/missing*	397	66.1	1	.	1
	Yes	92	91.4	5.451	<0.001	3.45	0.003
Pain	No/missing*	357	66.3	1	.	1
	Yes	132	83	2.475	<0.001	2.13	0.012
Unwell	No/missing*	433	69.6	1	.	1
	Yes	56	80.4	1.787	0.099	1.27	0.548
Itch	No/missing*	407	71.9	1	.	1
	Yes	82	65.1	0.726	0.209	0.7	0.233
Comorbidity	No/missing*	485	71.1	1	.	1
	Yes	15	60	0.609	0.355	0.62	0.42
Contact type	Centre	467	75	1	.	1
	Telephone	25	4	0.014	<0.001	0.02	<0.001
	Home visit	8	37.5	0.201	0.029	0.19	0.095

*Indicates reference category.