Table 2

Variables associated with administration of nurse-initiated analgesia

	Nurse-initiated analgesia		Univariate		Multivariate
	Not given	Given	OR	95% CI	OR	95% CI
Sex
Male	431	212	1		1
Female	439	207	0.96	0.76 to 1.21	1.01	0.78 to 1.31
Age, years
18–35	243	161	1		1
36–55	236	128	0.82	0.61 to 1.10	0.87	0.63 to 1.21
56–75	243	88	0.55	0.40 to 0.75	0.70	0.49 to 0.99
76 and above	148	42	0.43	0.29 to 0.64	0.63	0.40 to 0.97
Time of presentation
00:00–07:59	121	71	1		1
08:00–15:59	400	187	0.80	0.57 to 1.12	0.82	0.56 to 1.20
16:00–23:59	349	161	0.79	0.56 to 1.11	0.76	0.52 to 1.12
Day of presentation
Weekday	614	304	1		1
Weekend	256	115	0.91	0.70 to 1.18	0.90	0.68 to 1.20
Presenting complaint
Abdominal, urological	153	118	1		1
Trauma	107	61	0.74	0.50 to 1.10	0.97	0.62 to 1.50
Chest pain	127	40	0.41	0.27 to 0.63	0.86	0.52 to 1.42
Musculoskeletal	81	74	1.18	0.80 to 1.76	1.33	0.85 to 2.08
Other	402	126	0.41	0.30 to 0.56	0.55	0.39 to 0.78
Triage category*
2†	154	43	1		1
3	364	201	1.98	1.35 to 2.89	1.94	1.23 to 3.04
4	318	168	1.89	1.29 to 2.78	2.03	1.25 to 3.30
5	34	7	0.74	0.31 to 1.78	0.88	0.33 to 2.29
Triage Pain Score‡
1–3	411	88	1		1
4–7	377	224	2.78	2.09 to 3.68	2.53	1.88 to 3.42
8–10	82	107	6.09	4.23 to 8.81	5.71	3.77 to 8.64
Ethnicity
Australian, NZ, Brit	349	139	1		1
European	94	18	0.48	0.28 to 0.83	0.74	0.40 to 1.34
Asian	40	16	1.00	0.54 to 1.85	1.29	0.66 to 2.52
Other	19	7	0.93	0.38 to 2.25	0.93	0.36 to 2.43
Missing	368	239	1.63	1.26 to 2.10	1.99	1.50 to 2.63
Preferred language other than English
No	797	397	1		1
Yes	73	22	0.61	0.37 to 0.99	0.98	0.46 to 2.09
Interpreter required
No	830	408	1		1
Yes	40	11	0.56	0.28 to 1.10	0.65	0.23 to 1.86
Ambulance analgesia
Not given	755	392	1		1
Given	115	27	0.45	0.29 to 0.70	0.59	0.36 to 0.95

*Australasian Triage Scale: Patients in categories 1, 2, 3, 4 and 5 should be seen immediately, within 10, 30, 60 and 120 min, respectively.
†Includes a single patient of triage category 1.
‡0–10 Verbal Numerical Pain Rating Scale.
Brit, British; NZ, New Zealand.