Treatment satisfaction and quality of life with insulin glargine plus insulin lispro compared with NPH insulin plus unmodified human insulin in individuals with type 1 diabetes.
OBJECTIVE
The purpose of this study was to compare quality of life (QoL) and treatment satisfaction using insulin glargine plus insulin lispro with that using NPH insulin plus unmodified human insulin in adults with type 1 diabetes managed with multiple injection regimens.


METHODS
As part of a 32-week, five-center, two-way crossover study in 56 individuals with type 1 diabetes randomized to evening insulin glargine plus mealtime insulin lispro or to NPH insulin (once or twice daily) plus mealtime unmodified human insulin, the Diabetes Treatment Satisfaction Questionnaire (DTSQ) and the Audit of Diabetes Dependent Quality of Life questionnaire were completed at baseline and at weeks 16 and 32, with additional interim DTSQ measurements.


RESULTS
For all patients combined, the mean baseline present QoL score was 1.3, reflecting "good" QoL. Present QoL improved with glargine + lispro but did not change with NPH + human insulin (1.6 +/- 0.1 [mean +/- SEM] vs. 1.3 +/- 0.1, difference 0.3 [95% CI 0.1-0.6]; P = 0.014). Baseline mean average weighted impact score (AWI) of diabetes on QoL was -1.8, indicating a negative impact of diabetes on QoL. The AWI score at end point improved significantly with glargine + lispro but changed little with NPH + human insulin (-1.4 +/- 0.1 vs. -1.7 +/- 0.1, 0.3 [0.0-0.6]; P = 0.033). Treatment satisfaction (DTSQ 36-0 scale score) at end point was markedly greater with glargine plus lispro compared with that for NPH plus human insulin (32.2 +/- 3.4 vs. 23.9 +/- 7.2, 8.6 [6.5-10.6]; P < 0.001).


CONCLUSIONS
Insulin glargine plus insulin lispro improves treatment satisfaction, reduces the negative impact of diabetes on QoL, and improves QoL in comparison with NPH insulin plus unmodified human insulin in type 1 diabetes.
Ashwell
Simon G
SG
Newcastle University, Newcastle upon Tyne, UK. simon.ashwell@stees.nhs.uk
Bradley
Clare
C
Stephens
James W
JW
Witthaus
Elke
E
Home
Philip D
PD
D000328:Adult; D015992:Body Mass Index; D003922:Diabetes Mellitus, Type 1 / Q000097:blood / Q000188:drug therapy* / Q000503:physiopathology / Q000523:psychology*; D004359:Drug Therapy, Combination; D005260:Female; D006442:Glycated Hemoglobin / Q000378:metabolism; D006801:Humans; D007004:Hypoglycemic Agents / Q000627:therapeutic use*; D007328:Insulin / Q000031:analogs & derivatives* / Q000627:therapeutic use*; D000069036:Insulin Glargine; D061268:Insulin Lispro; D007336:Insulin, Isophane / Q000627:therapeutic use*; D049528:Insulin, Long-Acting; D008019:Life Style; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D011788:Quality of Life; D011795:Surveys and Questionnaires
D006442:Glycated Hemoglobin; D007004:Hypoglycemic Agents; D007328:Insulin; D000069036:Insulin Glargine; D061268:Insulin Lispro; D007336:Insulin, Isophane; D049528:Insulin, Long-Acting