Table 1.

Baseline characteristics of study cohort (n=2160) by socioeconomic deprivation quintile

VariableSocioeconomic Deprivation Quintile
1 (most), n=6072, n=5253, n=3824, n=3535 (least), n=293
Male gender, n, (%)336 (55)321 (61)230 (60)209 (59)174 (59)
Ethnic group, n (%)a
 White355 (59)361 (70)316 (83)307 (88)266 (91)
 South Asian174 (29)95 (18)32 (8)27 (8)17 (6)
 Black34 (6)27 (5)7 (2)6 (2)2 (0.7)
 Mixed/other41 (7)31 (6)24 (6)10 (3)6 (2)
Distance from center, km, median (IQR)15 (7–41)24 (11–54)33 (16–68)40 (19–68)40 (21–67)
Urban residence, n (%)b572 (98)436 (87)255 (69)252 (72)233 (80)
Primary kidney disease, n (%)c
 Glomerular disease137 (23)116 (22)78 (21)78 (22)52 (18)
 Systemic diseases affecting the kidney17 (3)18 (3)23 (6)15 (4)17 (6)
 Familial/hereditary nephropathies113 (19)69 (13)69 (18)47 (13)50 (17)
 Tubulointerstitial disease287 (48)271 (52)177 (47)176 (50)145 (50)
 Miscellaneous kidney disorders50 (8)43 (8)32 (8)34 (10)28 (10)
Age at first nephrology review, yr, median (IQR)d5 (0.5–11)3 (0.2–9)5 (0.2–11)3 (0.2–9)3 (0.2–9)
eGFR at first nephrology review, ml/min per 1.73 m2, median (IQR)e18 (8–41)16 (9–33)14 (7–30)13 (8–32)15 (7–31)
Late presentation, n (%)f145 (25)93 (19)103 (29)72 (22)65 (24)
Country, n (%)
 England516 (85)427 (81)312 (82)308 (87)273 (93)
 Scotland29 (5)46 (9)33 (9)28 (8)18 (6)
 Wales37 (6)31 (6)23 (6)14 (4)2 (0.7)
 Northern Ireland25 (4)21 (4)14 (4)3 (0.9)0 (0.0)
Age at KRT start, yr, median (IQR)10 (5–14)10 (5–13)10 (5–14)10 (4–14)9 (5–13)
Months from first nephrology review to KRT start, median (IQR)f26 (3–73)35 (7–88)24 (2–74)30 (5–85)27 (4–82)
Time period of KRT start, n (%)
 1996–2000139 (23)101 (19)81 (21)80 (23)56 (19)
 2001–2005131 (22)119 (23)94 (25)82 (23)70 (24)
 2006–2010149 (25)135 (26)92 (24)90 (26)81 (28)
 2011–2016188 (31)170 (32)115 (30)101 (29)86 (29)
eGFR at KRT start, ml/min per 1.73 m2, median (IQR)g9 (7–12)9 (7–12)9 (7–12)9 (7–12)9.1 (7–12)
Waitlisted before KRT start, n (%)h183 (38)182 (43)120 (39)122 (40)103 (41)
Start modality, n (%)i
 Hemodialysis194 (37)141 (30)91 (27)80 (26)72 (28)
 Peritoneal dialysis220 (41)193 (41)142 (42)118 (38)92 (36)
 Transplant117 (22)137 (29)102 (30)110 (36)95 (37)
  • IQR, interquartile range.

  • a Ethnicity missing for n=22.

  • b Urban residence data missing for n=63 (Northern Ireland residents).

  • c Primary kidney disease data missing for n=18.

  • d Age at first nephrology review missing for n=131.

  • e eGFR at first nephrology review missing for n=700.

  • f Late presentation and time to KRT data missing for n=133.

  • g eGFR at KRT start data missing for n=362.

  • h Waitlisting data unavailable for n=387.

  • i Start modality data missing for n=256.