Table 1—

Demographic parameters of the study population

Insulin aloneInsulin plus metforminInsulin plus troglitazone
N312730
Age (years)54.4 ± 9.151.8 ± 10.551.7 ± 8.0
Sex (M/F)15/1615/1213/17
Ethnicity (n)
 Caucasian171417
 African-American945
 Hispanic588
 Other1
Duration of diabetes (years)10.5 ± 7.37.6 ± 4.111.6 ± 6.8
Duration of insulin therapy (years)4.8 ± 4.73.5 ± 3.35.1 ± 4.0
C-peptide (ng/ml)1.9 ± 1.4*2.5 ± 1.72.8 ± 1.9
BMI36.4 ± 9.037.1 ± 6.636.4 ± 6.0
  • Data are means ± SD.

  • *

    * P < 0.05 vs. insulin plus troglitazone.