The impact of daily temperature on renal disease incidence: an ecological study

Borg, Matthew; Bi, Peng; Nitschke, Monika; Williams, Susan; McDonald, Stephen

doi:10.1186/s12940-017-0331-4

Environmental Health

Table 7 Incidence rate ratios (IRRs) for renal outcomes and daily temperature stratified by age (<65 and 65+ years)

From: The impact of daily temperature on renal disease incidence: an ecological study

Temperature	Admission data	Disease	Age	IRR	95% CI			P-value
Maximum	ED	Total renal disease	<65	1.002	0.999	–	1.004	0.137
			65+	1.002	0.999	–	1.005	0.127
		Urolithiasis	<65	1.008	1.004	–	1.012	<0.001
			65+	1.002	0.994	–	1.010	0.650
		Renal failure	<65	1.013	1.002	–	1.024	0.023
			65+	1.005	0.998	–	1.012	0.143
		AKI	<65	1.027	1.012	–	1.042	0.000
			65+	1.005	0.996	–	1.014	0.287
		CKD	<65	0.996	0.978	–	1.015	0.660
			65+	1.007	0.993	–	1.021	0.336
		UTI	<65	0.998	0.995	–	1.000	0.067
			65+	1.002	0.999	–	1.006	0.245
		Lower UTI	<65	0.997	0.994	–	1.000	0.025
			65+	1.002	0.999	–	1.006	0.243
		Pyelonephritis	<65	1.002	0.995	–	1.010	0.510
			65+	1.001	0.984	–	1.018	0.937
Minimum	ED	Total renal disease	<65	1.007	1.004	–	1.010	<0.001
			65+	1.002	0.998	–	1.006	0.268
		Urolithiasis	<65	1.017	1.012	–	1.022	<0.001
			65+	1.003	0.992	–	1.015	0.581
		Renal failure	<65	1.022	1.007	–	1.038	0.005
			65+	1.010	0.999	–	1.020	0.064
		AKI	<65	1.039	1.019	–	1.061	<0.001
			65+	1.003	0.990	–	1.015	0.658
		CKD	<65	1.002	0.977	–	1.029	0.852
			65+	1.017	0.998	–	1.038	0.084
		UTI	<65	1.000	0.997	–	1.004	0.905
			65+	1.001	0.996	–	1.006	0.792
		Lower UTI	<65	0.999	0.995	–	1.003	0.629
			65+	1.000	0.995	–	1.005	0.968
		Pyelonephritis	<65	1.007	0.997	–	1.018	0.152
			65+	1.014	0.989	–	1.039	0.274
Average	ED	Total renal disease	<65	1.004	1.001	–	1.007	0.003
			65+	1.003	0.999	–	1.007	0.131
		Urolithiasis	<65	1.014	1.009	–	1.019	<0.001
			65+	1.003	0.993	–	1.014	0.555
		Renal failure	<65	1.020	1.006	–	1.034	0.006
			65+	1.008	0.999	–	1.018	0.076
		AKI	<65	1.039	1.020	–	1.059	<0.001
			65+	1.005	0.994	–	1.017	0.379
		CKD	<65	0.997	0.974	–	1.022	0.831
			65+	1.013	0.995	–	1.031	0.160
		UTI	<65	0.998	0.995	–	1.001	0.246
			65+	1.002	0.998	–	1.007	0.377
		Lower UTI	<65	0.997	0.993	–	1.000	0.089
			65+	1.002	0.997	–	1.007	0.431
		Pyelonephritis	<65	1.005	0.996	–	1.014	0.285
			65+	1.006	0.984	–	1.029	0.587
Maximum	Inpatient	Total renal disease	<65	1.001	0.998	–	1.004	0.587
			65+	1.002	0.999	–	1.005	0.229
		Urolithiasis	<65	1.003	0.997	–	1.009	0.334
			65+	1.002	0.991	–	1.013	0.754
		Renal failure	<65	1.002	0.992	–	1.013	0.657
			65+	0.997	0.990	–	1.004	0.388
		AKI	<65	1.006	0.993	–	1.019	0.389
			65+	0.997	0.990	–	1.005	0.479
		CKD	<65	1.001	0.986	–	1.017	0.881
			65+	0.996	0.986	–	1.006	0.419
		UTI	<65	1.000	0.996	–	1.005	0.887
			65+	1.003	0.999	–	1.007	0.185
		Lower UTI	<65	0.999	0.994	–	1.004	0.693
			65+	1.002	0.998	–	1.006	0.282
		Pyelonephritis	<65	1.002	0.995	–	1.010	0.540
			65+	1.013	0.997	–	1.030	0.115
Minimum	Inpatient	Total renal disease	<65	1.000	0.996	–	1.005	0.896
			65+	1.002	0.998	–	1.007	0.309
		Urolithiasis	<65	1.001	0.993	–	1.009	0.782
			65+	1.001	0.985	–	1.017	0.912
		Renal failure	<65	1.000	0.985	–	1.015	0.995
			65+	0.997	0.987	–	1.007	0.563
		AKI	<65	1.006	0.987	–	1.025	0.540
			65+	0.998	0.988	–	1.009	0.780
		CKD	<65	0.991	0.969	–	1.013	0.406
			65+	0.995	0.981	–	1.010	0.516
		UTI	<65	1.002	0.996	–	1.009	0.489
			65+	1.002	0.996	–	1.008	0.499
		Lower UTI	<65	0.999	0.991	–	1.006	0.749
			65+	1.001	0.995	–	1.007	0.812
		Pyelonephritis	<65	1.009	0.999	–	1.020	0.080
			65+	1.024	1.001	–	1.048	0.042
Average	Inpatient	Total renal disease	<65	1.001	0.997	–	1.005	0.667
			65+	1.003	0.998	–	1.007	0.222
		Urolithiasis	<65	1.003	0.996	–	1.010	0.439
			65+	1.002	0.987	–	1.017	0.805
		Renal failure	<65	1.002	0.988	–	1.016	0.762
			65+	0.996	0.987	–	1.005	0.404
		AKI	<65	1.007	0.991	–	1.025	0.390
			65+	0.997	0.987	–	1.007	0.554
		CKD	<65	0.997	0.977	–	1.017	0.772
			65+	0.994	0.981	–	1.008	0.399
		UTI	<65	1.001	0.995	–	1.007	0.675
			65+	1.003	0.998	–	1.008	0.249
		Lower UTI	<65	0.999	0.992	–	1.006	0.695
			65+	1.002	0.997	–	1.008	0.429
		Pyelonephritis	<65	1.006	0.996	–	1.015	0.231
			65+	1.021	1.000	–	1.043	0.051

Estimated incidence rate ratios (IRRs) and associated 95% confidence intervals and P-values for daily admissions for renal diseases in relation to an increase in daily maximum temperature per 1°C during the warm seasons (October – March) in Adelaide from 1 July 2003 to 31 March 2014. Patients are separated into two groups: one for patients aged <65 years old, another for patients aged ≥65 years old. Both emergency department (ED) and inpatient admissions were included

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ISSN: 1476-069X

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