title: Home use of the GlucoWatch G2 biographer in children with diabetes.
abstract: OBJECTIVE
  To evaluate usability, accuracy, and hypoglycemia detection of the GlucoWatch G2 Biographer (GW2B) in children aged 1 to 17 years.
  
  
  METHODS
  After a 15-hour study of device accuracy, 46 children (15 <7 years, 31 > or =7 years) with type 1 diabetes were enrolled for an extended-wear outcome study: 2 daytime and 2 nighttime 15-hr wear periods each week and blood glucose monitoring 4 times daily for 3 months.
  
  
  RESULTS
  A total of 531 paired GW2B/meter readings were available for accuracy assessment. The correlation coefficients were 0.58 and 0.74 (ages <7 and > or =7 years, respectively). There was no significant change in hemoglobin A1C)or weight-adjusted insulin dose at 3 months after biographer use. Forty-two episodes of hypoglycemia were detected by the GW2B, 33 of which were confirmed by blood glucose meters. Sensitivity and specificity of audible low-glucose alerts were approximately 79% and 83%, respectively. No significant side effects were reported.
  
  
  CONCLUSIONS
  The GW2B is usable and safe in children who are <7 years or older in the home setting. The GW2B can detect asymptomatic nocturnal hypoglycemia in younger children.
authors.affiliation: Pediatric Diabetes Center, Loma Linda University, 11175 Campus St, CP A1120R, Loma Linda, CA 92354, USA. ehathout@ahs.llumc.edu.
authors.forename: Eba
authors.initials: E
authors.lastname: Hathout
authors.forename: Nina
authors.initials: N
authors.lastname: Patel
authors.forename: Christina
authors.initials: C
authors.lastname: Southern
authors.forename: Julie
authors.initials: J
authors.lastname: Hill
authors.forename: Reginald
authors.initials: R
authors.lastname: Anderson
authors.forename: Jeannine
authors.initials: J
authors.lastname: Sharkey
authors.forename: Merrilee
authors.initials: M
authors.lastname: Hadley-Scofield
authors.forename: Long
authors.initials: L
authors.lastname: Tran
authors.forename: Amy
authors.initials: A
authors.lastname: Leptien
authors.forename: Margarita
authors.initials: M
authors.lastname: Lopatin
authors.forename: Betty
authors.initials: B
authors.lastname: Wang
authors.forename: John
authors.initials: J
authors.lastname: Mace
authors.forename: Richard
authors.initials: R
authors.lastname: Eastman
mesh_terms: D000293:Adolescent; D001786:Blood Glucose / Q000032:analysis; D015190:Blood Glucose Self-Monitoring / Q000295:instrumentation*; D002648:Child; D002675:Child, Preschool; D003922:Diabetes Mellitus, Type 1 / Q000097:blood / Q000150:complications* / Q000188:drug therapy; D005260:Female; D006442:Glycated Hemoglobin / Q000032:analysis; D006801:Humans; D007003:Hypoglycemia / Q000175:diagnosis* / Q000209:etiology; D007004:Hypoglycemic Agents / Q000009:adverse effects; D007328:Insulin / Q000009:adverse effects; D008297:Male; D018670:Monitoring, Ambulatory / Q000295:instrumentation
chemical_list: D001786:Blood Glucose; D006442:Glycated Hemoglobin; D007004:Hypoglycemic Agents; D007328:Insulin