Table 2.

Prevalence of undocumented CKD by patient, practitioner, and laboratory report characteristics

PredictorSubjects with Undocumented CKD N (%)
OverallBy SexBy Type of Laboratory Report
MalesFemalesSCr-Only ReportingAutomatic Reporting eGFR
All subjects449 (51.9)237 (54.2)212 (49.5)
 Males159 (44.8)86 (43.0)73 (47.1)
 Females290 (56.9)151 (65.7)139 (50.9)
eGFR at inclusion (ml/min per 1.73 m2)
 40–5988 (62.4)74 (58.8)14 (93.3)43 (60.6)45 (64.3)
 30–44318 (55.5)77 (38.9)241 (63.4)172 (59.7)146 (51.2)
 <3043 (25.5)8 (22.2)35 (30.4)22 (28.2)21 (28.7)
Subject age (yr)
 <6051 (50.5)25 (49.0)26 (52.0)30 (53.6)21 (46.7)
 60–75108 (44.4)38 (37.2)70 (49.7)53 (46.5)55 (42.6)
 75–85180 (56.3)65 (49.6)115 (60.9)91 (55.2)89 (57.4)
 >85110 (54.7)31 (43.7)79 (60.8)63 (61.8)47 (47.5)
Comorbid conditions
 No diabetes mellitus271 (55.7)83 (48.3)188 (59.7)155 (60.3)116 (50.4)
 Diabetes mellitus178 (47.1)76 (41.5)102 (52.3)82 (45.6)96 (48.5)
 No hypertension85 (61.6)36 (50.0)49 (74.2)45 (72.6)40 (52.6)
 Hypertension364 (50.1)123 (43.5)241 (54.3)192 (562)172 (48.9)
Practitioner training
 Nurse practitioner or physician assistant59 (57.8)16 (53.3)43 (59.7)38 (71.7)21 (42.9)
 Doctor of medicine or osteopathic medicine390 (51.1)143 (44.0)247 (56.4)199 (51.8)191 (50.4)
Practitioner experience (yr)
 <20212 (47.2)68 (37.8)144 (53.5)161 (53.3)51 (34.7)
 ≥20237 (57.0)91 (52.0)146 (60.6)76 (56.3)161 (57.3)
  • SCr, serum creatinine; eGFR, estimated GFR.