Table 1 Sample characteristics categorized by the diagnosis of depression among individuals with cardiovascular conditions presented as weighted sample size (Unweighted n = 96,697)

Age

61.5 ± 0.1

62.0 ± 0.1

61.6 ± 0.3

60.2 ± 0.2

57.0 ± 0.3

<  0.001

Female

118,073,895 (12.6%)

88,921,992 (12.3%)

6,149,388 (12.2%)

17,136,457 (14%)

5,866,058 (14.4%)

<  0.001

Marital status

<  0.001

 Married

548,568,787 (58.4%)

443,957,776 (61.2%)

24,654,404 (48.8%)

63,380,151 (51.7%)

16,576,456 (40.6%)

 Widowed

145,934,265 (15.5%)

111,472,105 (15.4%)

8,890,367 (17.6%)

20,172,914 (16.5%)

5,398,878 (13.2%)

 Divorced

133,376,145 (14.2%)

91,872,866 (12.7%)

8,561,595 (16.9%)

22,246,025 (18.1%)

10,695,659 (26.2%)

 Separated

20,487,099 (2.18%)

12,641,485 (1.74%)

1,952,166 (3.86%)

3,769,402 (3.08%)

2,124,046 (5.2%)

 Never married

90,453,865 (9.63%)

64,909,495 (8.95%)

6,480,585 (12.8%)

12,999,639 (10.6%)

6,064,145 (14.8%)

Health insurance

<  0.001

 Any private

616,141,312 (65.6%)

497,948,903 (68.7%)

22,175,659 (43.9%)

78,549,568 (64.1%)

17,467,182 (42.7%)

 Public only

268,783,570 (28.6%)

188,172,701 (26%)

23,673,089 (46.8%)

37,290,848 (30.4%)

19,646,932 (48.1%)

 Uninsured

53,910,150 (5.74%)

38,746,994 (5.35%)

4,690,370 (9.28%)

6,727,715 (5.49%)

3,745,071 (9.17%)

Employment

<  0.001

 Employed

429,783,368 (45.8%)

354,917,968 (49.1%)

13,885,184 (27.6%)

51,029,996 (41.8%)

9,950,221 (24.4%)

 Not employed

505,727,921 (53.9%)

367,278,193 (50.9%)

36,472,070 (72.4%)

71,148,218 (58.2%)

30,829,440 (75.6%)

Wage

21,338 ± 266

23,386 ± 290

9876 ± 428

18,090 ± 482

8919 ± 478

<  0.001

Smoke

137,182,754 (14.6%)

88,298,836 (12.2%)

12,290,545 (24.3%)

23,132,088 (18.9%)

13,461,284 (32.9%)

<  0.001

Body Mass Index

<  0.001

 Normal

213,354,729 (22.7%)

169,372,686 (23.4%)

11,865,490 (23.5%)

24,541,148 (20%)

7,575,406 (18.5%)

 Overweight

333,797,512 (35.6%)

267,335,467 (36.9%)

16,193,934 (32%)

39,114,031 (31.9%)

11,154,080 (27.3%)

 Obese

391,682,790 (41.7%)

288,160,446 (39.8%)

22,479,693 (44.5%)

58,912,952 (48.1%)

22,129,699 (54.2%)

Office expenditure

2528 ± 32

2331 ± 35

2913 ± 113

3203 ± 72

3524 ± 130

<  0.001

Outpatient expenditure

859 ± 28

792 ± 29

931 ± 80

1037 ± 71

1306 ± 141

<  0.001

Emergency room expenditure

334 ± 9

288 ± 10

518 ± 34

404 ± 20

613 ± 49.5

<  0.001

Inpatient expenditure

2210 ± 55

1852 ± 54

4173 ± 323

2772 ± 142

4444 ± 288

<  0.001

Prescription expenditure

3089 ± 40

2579 ± 33

3925 ± 116

4711 ± 157

6243 ± 310

<  0.001

Dental expenditure

364 ± 6

369 ± 6

221 ± 16

411 ± 16

313 ± 19

<  0.001

Home healthcare expenditure

500 ± 29

367 ± 22

1273 ± 147

756 ± 128

1139 ± 114

<  0.001

Other expenditure

185 ± 5

164 ± 4

234 ± 32

247 ± 14

311 ± 32

<  0.001

Total expenditure

9712 ± 106

8402 ± 93

13,888 ± 445

13,130 ± 294

17,536 ± 658

<  0.001