Table 1.

Logistic regression analysis of risk factors for interrupted evaluation

Factors	Number	IE (%)	Crude OR (95% CI)	Adjusted OR (95% CI)	P value (Wald's test)	P value (LR test)
All	7255	1125 (16)
Age (years)						<0.001
0-14	36	4 (11)	1.18 (0.41 to 3.34)	0.97 (0.33 to 2.8)	0.952
15-64	3558	342 (10)	Reference
65+	3661	779 (21)	2.54 (2.22 to 2.91)	2.42 (2.1 to 2.8)	<0.001
Sex						0.817
Female	2158	315 (15)	Reference
Male	5097	810 (16)	1.11 (0.96 to 1.27)	0.98 (0.85 to 1.14)	0.817
Area						<0.001
Centre	1332	234 (18)	Reference
East	419	76 (18)	1.04 (0.78 to 1.38)	1.12 (0.83 to 1.51)	0.458
Kaohsiung City	1507	267 (18)	1.01 (0.83 to 1.23)	1.09 (0.89 to 1.33)	0.419
North	740	98 (13)	0.72 (0.55 to 0.92)	0.77 (0.59 to 1)	0.054
South	1087	179 (16)	0.93 (0.75 to 1.15)	0.95 (0.76 to 1.19)	0.672
Taipei City	2170	271 (12)	0.67 (0.55 to 0.81)	0.75 (0.62 to 0.92)	0.005
Comorbidity
CLD	1192	277 (23)	1.86 (1.6 to 2.17)	1.91 (1.62 to 2.24)	<0.001	<0.001
DM	1191	136 (11)	0.66 (0.55 to 0.8)	0.64 (0.53 to 0.78)	<0.001	<0.001
HIV	30	4 (13)	0.84 (0.29 to 2.4)	1.52 (0.51 to 4.49)	0.451	0.472
Initial level						<0.001
A	3104	539 (17)	Reference
B	1275	203 (16)	0.9 (0.76 to 1.08)	0.78 (0.65 to 0.93)	0.007
C	1644	210 (13)	0.7 (0.59 to 0.83)	0.68 (0.57 to 0.82)	<0.001
D	1232	173 (14)	0.78 (0.65 to 0.94)	0.75 (0.62 to 0.92)	0.005
Pathway overlaps 2003	2110	493 (23)	2.18 (1.91 to 2.48)	2.32 (2.02 to 2.66)	<0.001	<0.001

Healthcare facility levels: A, for primary care/ general practice; B, for regional hospitals with inpatient capacity; C, for larger district hospitals; D, for large hospitals with a range of specialists.

Comorbidities and pathway overlaps 2003 are binary variables, applying 'none' as the reference groups.

Crude and adjusted ORs were calculated from the results of univariate and multivariate logistic regressions, respectively.

CLD, chronic lung disease; DM, diabetes mellitus; IE, interrupted evaluation; LR, likelihood ratio.