Table 1.

a. Age distribution of patients with newly coded CKD3a between 1/1/2015-31/12/2015, separated by the degree of albuminuria. CKD3aA1 = eGFR between 45-59mls/min/1.73m² with uACR <3mg/mmol, CKD3aA2 = eGFR between 45-59mls/min/1.73m² with uACR between 3-30mg/mmol and CKD3aA3 = eGFR between 45-59mls/min/1.73m² with uACR >30mg/mmol. b. Ethnicity of patients with newly coded CKD3a between 1/1/2015-31/12/2015, separated by the degree of albuminuria. CKD3aA1 = eGFR between 45-59mls/min/1.73m² with uACR <3mg/mmol, CKD3aA2 = eGFR between 45-59mls/min/1.73m² with uACR between 3-30mg/mmol and CKD3aA3 = eGFR between 45-59mls/min/1.73m² with uACR >30mg/mmol.

a
	Group 1	Group 2		Group 3
Age in 2015 ‐ Years	CKD 3aA1	CKD 3aA2		CKD 3aA3	No uACR		Grand Total
40–44	<5	<5		<5	7		<11
45–49	6	<5		10	15		<32
50–54	14	10		12	51		87
55–59	22	19		10	57		108
60–64	22	12		14	70		118
65–69	50	28		15	115		208
70–74	37	33		13	103		186
75–79	40	22		12	90		164
80–84	18	17		<5	77		115
85–89	11	8		<5	24		<44
90+	<5	<5		<5	<5		<9
Grand Total	<224	<154		<93	<611		1,082
b
	CKD3aA1			CKD3aA2			CKD3aA3
Ethnicity	Female		Male	Female		Male	Female	Male
White	30		60	35		65	10	37
Asian or Asian British	45		39	15		52	11	9
Black or black British	15		22	<5		<19	<5	8
Other ethnic groups	<5		6	7		14	<5	7
Mixed	<5		<5	<5		<5	<5	<5
Null	-		-	-		<5	-	-
Grand Total	<96		<128	<62		<92	<28	<65

CKD3aA1 = eGFR between 45-59mls/min/1.73m2 with uACR <3mg/mmol.

CKD3aA2 = eGFR between 45-59mls/min/1.73m2 with uACR between 3-30mg/mmol.

CKD3aA3 = eGFR between 45-59mls/min/1.73m2 with uACR >30mg/mmol.