Table 3

Frequency of follow-up of abnormal screening results within 6 months by age and type of screening test

ScreenedAbnormal screening result [n (%)]6-month follow-up period [n (% of abnormal*)]
Clinician interpretation of results being abnormalFollow-up appointment scheduledFollow-up appointment attendedClinician diagnosis of dysglycemia*Clinician diagnosis of prediabetesClinician diagnosis of diabetes
Screened with laboratory glucose: abnormal result
  defined as laboratory glucose ≥100 mg/dL
 Age 45–54 years4,1731,198 (29)119 (10)227 (19)223 (19)95 (8)74 (6)21 (2)
 Age 55–64 years3,6141,115 (31)248 (22)347 (31)299 (27)186 (17)151 (14)35 (3)
 Age ≥65 years477180 (38)7 (4)74 (41)48 (27)4 (2)4 (2)0
 Total8,2642,493 (30)174 (15)648 (26)570 (23)284 (11)228 (9)56 (2)
Screened with laboratory glucose: abnormal result defined as laboratory glucose ≥126 mg/dL
 Age 45–54 years4,173178 (4)53 (30)49 (28)46 (26)28 (16)7 (4)21 (12)
 Age 55–64 years3,614206 (6)93 (45)103 (50)100 (49)75 (37)40 (19)35 (17)
 Age ≥65 years47725 (5)7 (29)7 (29)4 (14)4 (14)4 (14)0
 Total8,264408 (5)153 (37)160 (39)149 (37)107 (26)50 (12)56 (14)
Screened with HbA1c: abnormal result
  defined as HbA1c ≥5.7% (≥39 mmol/mol)
 Age 45–54 years561323 (58)105 (33)139 (43)133 (41)107 (33)67 (21)39 (12)
 Age 55–64 years564380 (67)134 (35)150 (40)135 (36)153 (40)109 (29)44 (12)
 Age ≥65 years7148 (69)8 (16)18 (37)17 (35)10 (20)6 (12)4 (8)
 Total1,196752 (63)247 (33)307 (41)285 (38)269 (36)182 (24)87 (12)
Screened with laboratory glucose or HbA1c: abnormal result defined as laboratory glucose ≥126 mg/dL or HbA1c ≥5.7% (≥39 mmol/mol)
 Age 45–54 years4,734458 (10)158 (35)188 (41)179 (39)135 (30)75 (16)60 (13)
 Age 55–64 years4,178563 (13)205 (36)232 (41)213 (38)206 (37)127 (23)79 (14)
 Age ≥65 years54873 (13)15 (20)25 (34)21 (28)13 (18)9 (13)4 (5)
 Total9,4601,094 (12)378 (35)445 (41)413 (38)354 (32)211 (19)143 (13)
  • Results in this table are based on weighted numbers and percentages and may not add up to 100%.

  • *Dysglycemia is defined here as a cumulative measure of impaired fasting glucose, impaired glucose tolerance, prediabetes, or diabetes.

  • †Prediabetes is defined as impaired fasting glucose, impaired glucose tolerance, or prediabetes.