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. Author manuscript; available in PMC: 2009 Feb 27.
Published in final edited form as: JAMA. 2008 Jun 18;299(23):2751–2759. doi: 10.1001/jama.299.23.2751

Table 3.

Characteristics of 4847 Men and Women Without Prevalent Depressive Symptoms by Impaired Fasting Glucose and Type 2 Diabetes Status, 2000-2002

Fasting Glucose
Type 2 Diabetes
Normal (n=2868) (59.2%)
Impaired (n=1357) (28.0%)
Untreated (n=203) (4.2%)
Treated (n=417) (8.6%)
P Valuea
Abbreviations: BMI, body mass index, calculated as weight in kilograms divided by height in meters squared; CES-D, Center for Epidemiologic Studies Depression Scale; HDL, high-density lipoprotein; IQR, interquartile range; MET, metabolic equivalent task. SI conversion factors: To convert HDL cholesterol to mmol/L, multiply by 0.0259; triglycerides to mmol/L, multiply by 0.0113.
Age, mean (SD), y
60.7 (10.1)
63.4 (9.8)
63.7 (9.5)
64.9 (9.4)
<.001
Sex, No. (%)
 Men
1298 (45.3)
803 (59.3)
125 (61.6)
226 (54.5)
<.001
 Women
1565 (54.7)
552 (40.7)
78 (38.4)
189 (45.5)
Ethnicity, No. (%)
 White
1322 (46.2)
468 (34.5)
53 (26.1)
69 (16.6)
<.001
 Chinese American
331 (11.6)
204 (15.1)
30 (14.8)
59 (14.2)
 African American
722 (25.2)
388 (28.6)
71 (34.9)
173 (41.7)
 Hispanic
488 (17.1)
295 (21.8)
49 (24.1)
114 (27.5)
Education status, No. (%)
 <High school
339 (11.8)
225 (16.6)
53 (26.1)
110 (26.5)
<.001
 High school
461 (16.1)
280 (20.7)
40 (19.7)
79 (19.0)
 ≥College
2063 (72.1)
850 (62.7)
110 (54.2)
226 (54.5)
Annual income, No. (%), $
 <15000
427 (14.9)
267 (19.7)
56 (27.6)
116 (27.9)
<.001
 ≥15000-<24000
275 (9.6)
180 (13.3)
26 (12.8)
68 (16.4)
 ≥24000-<34000
334 (11.7)
185 (13.7)
22 (10.8)
70 (16.9)
 ≥34000-<49000
466 (16.3)
209 (15.4)
31 (15.3)
55 (13.3)
 ≥49000-<74000
532 (18.6)
211 (15.6)
31 (15.3)
54 (13.0)
 ≥74000
829 (28.9)
303 (22.4)
37 (18.2)
52 (12.5)
Cigarette smoking status, No. (%)
 Never
1495 (52.3)
660 (48.8)
99 (49.0)
212 (51.5)
.02
 Former
1008 (35.3)
541 (40.0)
88 (43.6)
150 (36.4)
 Current
354 (12.4)
151 (11.2)
15 (7.4)
50 (12.4)
Daily caloric intake, median (IQR), calories/d
1469 (1094-1980)
1530 (1140-2108)
1548 (1050-2100)
1342 (972-1866)
<.001
Intentional exercise, median (IQR), MET-min/wk
990 (300-2220)
840 (52-1935)
735 (0-1890)
698 (0-1680)
<.001
Current alcohol drinking, No. (%)
1743 (74.5)
776 (69.9)
104 (63.8)
164 (50.8)
<.001
Microalbuminuria, No. (%)
129 (4.5)
125 (9.3)
39 (19.2)
100 (24.2)
<.001
Hypertension, No. (%)
1007 (35)
667 (49.2)
113 (55.7)
279 (67.2)
<.001
BMI, mean (SD)
27.2 (4.9)
29.3 (5.3)
30.1 (5.2)
30.1 (5.7)
<.001
HDL cholesterol, mean (SD), mg/dL
53.1 (15.4)
48.1 (13.3)
45.4 (11.8)
46.2 (12.5)
<.001
Triglycerides, mean (SD), mg/dL
104 (72-147)
113 (83-167)
129 (89-203)
126.5 (85-188)
<.001
Incident cases of elevated depressive symptoms, No.
336
112
15
60
Person-years
9139
4013
481
969
a

For categorical covariates, the P value was generated from the χ2 test. For continuous covariates, the P value was generated from the analysis of variance. For the nonnormally distributed variables, the P value was generated from the Kruskal-Wallis Test.