Table 2

Uncertainty tolerance (UT) associations with patient-level outcomes

Model	UT estimate	−95% CI	+95% CI	P value*	R²_M (R²_C)	ICC	AIC \| BIC
Logistic models (ORs)
Tests: any ordered?
Model I	0.75	0.40	1.41	0.18^1t	14% (18%)	5%	498 \| 525
Model II	0.72	0.38	1.36	0.16^1t	14% (18%)	5%	496 \| 528
Model III	0.72	0.38	1.35	0.16^1t	17% (21%)	5%	491 \| 530
Model IV	0.74	0.40	1.36	0.17^1t	18% (21%)	4%	493 \| 541
Treatments: any ordered?
Model I	0.88	0.52	1.49	0.32^1t	6% (7%)	1%	515 \| 543
Model II	0.87	0.52	1.45	0.30^1t	9%	<1%	508 \| 539
Model III	0.90	0.54	1.52	0.35^1t	11%	<1%	506 \| 545
Model IV	0.93	0.55	1.59	0.40^1t	14%	<1%	500 \| 548
Treatments or tests: any ordered?
Model I	0.65	0.29	1.47	0.15^1t	11% (22%)	13%	451 \| 478
Model II	0.64	0.29	1.43	0.14^1t	11% (22%)	12%	451 \| 483
Model III	0.66	0.30	1.46	0.15^1t	13% (23%)	11%	448 \| 488
Model IV	0.71	0.35	1.45	0.16^1t	18% (23%)	7%	446 \| 494
Return attendance 30 days after presentation
Model I	0.95	0.47	1.92	0.89^2t	4%	<1%	320 \| 348
Model II	0.97	0.47	2.00	0.94^2t	9%	<1%	312 \| 344
Model III	0.95	0.46	1.95	0.88^2t	13%	<1%	311 \| 351
Model IV	0.97	0.46	2.04	0.94^2t	13%	<1%	314 \| 362
Admission 30 days postpresentation
Model I	0.77	0.28	2.11	0.61^2t	18%	<1%	191 \| 219
Model II	0.79	0.28	2.26	0.66^2t	24%	<1%	185 \| 217
Model III	0.80	0.28	2.30	0.67^2t	24%	<1%	189 \| 229
Model IV	0.82	0.28	2.35	0.71^2t	24%	<1%	192 \| 240
24-hour or shorter length of stay
Model I	0.91	0.35	2.34	0.43^1t	98%	<1%	196 \| 224
Model II	0.91	0.35	2.34	0.42^1t	98%	<1%	198 \| 230
Model III	0.97	0.36	2.59	0.48^1t	98%	<1%	198 \| 238
Model IV	0.97	0.36	2.59	0.73^1t	98%	<1%	198 \| 245
Linear models (unstandardised β)†
Test and treatment costs
Model I	−0.01	−0.06	0.05	0.37^1t	8% (12%)	4%	−162 \| −130
Model II	−0.01	−0.06	0.04	0.36^1t	9% (13%)	3%	−156 \| −120
Model III	−0.01	−0.06	0.04	0.31^1t	13% (16%)	3%	−150 \| −106
Model IV	−0.01	−0.06	0.04	0.32^1t	13% (16%)	4%	−130 \| −79
+ admission costs
Model I	0.02	−0.24	0.28	0.56^1t	16% (17%)	1%	1122 \| 1153
Model II	−0.002	−0.24	0.24	0.49^1t	23%	<1%	1088 \| 1123
Model III	−0.005	−0.24	0.23	0.48^1t	27%	<1%	1082 \| 1126
Model IV	−0.002	−0.23	0.23	0.48^1t	28%	<1%	1094 \| 1145
+ reattendance and return admission costs
Model I	−0.05	−0.34	0.24	0.37^1t	17% (19%)	2%	1182 \| 1213
Model II	−0.07	−0.33	0.19	0.29^1t	25% (26%)	<1%	1141 \| 1177
Model III	−0.08	−0.33	0.17	0.28^1t	27%	<1%	1146 \| 1190
Model IV	−0.07	−0.32	0.18	0.28^1t	28%	<1%	1156 \| 1208

R²_M=variance explained by fixed effects.
R²_C=variance explained by fixed+random effects (where random effects variance minimal R²_C=R²_M).
Bold AIC/BIC 2=model with the lowest AIC+BIC.
*1t/2t=one/two-tailed tests.
†Note the natural logarithm of all outcomes was used to mitigate skew after a constant of 182 was added to cost outcomes.
AIC, Akaike Information Criteria; BIC, Bayesian Information Criteria; ICC, intraclass correlation coefficients.