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Table 1 Summary of descriptive characteristics of the elderly population with type 2 diabetes mellitus and enrolled in a Medicare health maintenance organization

From: Self-reported predictors of depressive symptomatology in an elderly population with type 2 diabetes mellitus: a prospective cohort study

Characteristic Total (n = 792) With depression (n = 137) Without depression (n = 655) Test statistics (p value)
Age (years), mean (SD) 71. 95 (8.7) 69.42 (11.33) 72.47 (7.92) 6.3486 (0.000)
Sex (% male) 43.97 39.71 44.87 4.48 (0.034)
Current smokers (%) 12.5 14.59 12.1 2.73 (0.099)
Any alcohol consumption (%) 5.55 3.65 5.95 2.24 (0.134)
Physically active (%) 26.64 16.79 28.70 17.91 (0.000)
SF-12 general health score, mean (SD) 46.09 (25.25) 30.58 (21.82) 49.37 (24.71) 91.29 (0.000)
No of ADLs causing problems, mean (SD) 0.37 (1.07) 0.81 (1.52) 0.28 (0.92) 67.96 (0.000)
No of IADLs causing problems, mean, (SD) 0.97 (1.72) 2.04 (2.24) 0.75 (1.50) 105.05 (0.000)
Prescription refills mean (SD) 3.33 (0.98) 3.62 (0.75) 3.26 (1.01) 0.25 (0.615)
Antidiabetic medication use (%) 99.62 98.54 99.84 0.99 (0.319)
Hospitalization during previous year (%) 29.67 48.9 25.65 25.88 (0.000)
ER visits during previous year (%) 38.28 67.91 32.15 34.91 (0.000)
  1. SF-12 = Medical Outcomes Study 12-item Short Form Health Survey; ADLs = Activities of Daily Living; IADLs = Instrumental Activities of Daily Living; ER = Emergency room.
  2. Independent sample t test was performed for continuous variables such as age, SF-12 scores, No of ADLs causing problems, No of IADLs causing problems, and prescription refills.
  3. Chi2 test of independence was performed for sex, current smoker, any alcohol consumption, physical activities, hospitalization in previous year and ER visits in previous year