Impact of standalone and embedded telephone triage systems on after hours primary medical care service utilisation and mix in Australia

Table 6 Change in service mix in the user population in AHPMCT area compared with national comparator(change in contact: adjusted odds ratio & 95% Confidence Intervals [CIs]; frequency of contacts – unstandardised B coefficients [beta standardised in square brackets] & 95% CIs for unstandardised coefficients)

	STATEWIDE CALL CENTRE		REGIONAL CALL CENTRE		Deputising service	Local triage centre
	Metro	Non-metro	Metro	Non-metro
GP clinic visit
Contact	1.35 (0.86 – 2.12)	1.38 (0.89 – 2.14)	0.94 (0.59 – 1.50)	1.42 (0.90 – 2.24)	0.62* (0.39 – 0.97)	1.49 (0.85 – 2.62)
Frequency	0.07 [0.01] (-1.14 – 1.28)	-0.32 [-0.03] (-1.40 – 0.77)	-0.84 [-0.07] (-2.03 – 0.36)	0.33 [0.03] (-0.90 – 1.56)	-1.09 [-0.11] (-2.12 – -0.7)^†	1.20 [0.09] (-0.25 – 2.66)
GP home visit
Contact	1.37 (0.67 – 2.80)	1.70 (0.73 – 3.94)	0.78 (0.40 – 1.51)	2.11^‡ (1.02–4.38)	1.06 (0.55 – 2.01)	0.96 (0.36 – 2.58)
Frequency	0.60 [0.17] (-0.20 – 1.41)	0.47 [0.12] (-0.44 – 1.37)	0.36 [0.09] (-0.61 – 1.32)	0.66 [0.15] (-0.41 – 1.71)	0.23 [0.05] (-0.90 – 1.36)	0.42 [0.10] (-0.49 – 1.32)
ED visit
Contact	0.78 (0.50 – 1.22)	0.99 (0.60 – 1.64)	1.19 (0.77 – 1.84)	1.11 (0.63 – 1.98)	1.17 (0.76 – 1.82)	0.99 (0.56 – 1.74)
Frequency	-0.31 [-0.05] (-1.03 – 0.41)	0.12 [0.002] (-0.77 – 0.81)	0.08 [0.01] (-0.67 – 0.83)	-0.15 [-0.02] (-1.03 – 0.72)	0.02 [0.003] (-0.71 – 0.76)	0.30 [0.03] (-0.80 – 1.34)

Notes: Other variables having independent effects where the effect of the AHMCT is statistically significant
* age (0.97–0.98); Persons over 12 years in household (0.49–0.99) [Odds ratio]
^‡ age (1.02–1.05); Informant Overseas-born (1.24–3.24); Persons in household (1.09–2.73); Person with chronic illness in household (1.07–2.36) [Odds ratio]
^† Indigenous origins (0.14–3.89); Informant Overseas-born (0.24–1.68), Children under 12 years in household (0.15–1.51); Person with chronic illness in household (0.85–2.05) [B coefficient]