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Table 2 Baseline Demographic Characteristics Between CDI and Non-CDI Residents Before and After PSM

From: Burden of Clostridium difficile-associated disease among patients residing in nursing homes: a population-based cohort study

 

Unmatched Groups

1:4 PSM-Matched Groups

Non-CDI Residents

CDI Residents

Non-CDI Residents

CDI Residents

(N = 30258)

(N = 789)

(N = 2612)

(N = 653)

N/Mean

%

N/Mean

%

P-value

Std. Diff.

N/Mean

%

N/Mean

%

P-value

Std. Diff.

Age (mean ± SD)

83.6 ± 9.3

 

83.1 ± 8.8

 

0.1103

5.6

83.5 ± 9.1

 

83.6 ± 8.7

 

0.9206

0.4

 65–74

5979

19.8%

156

19.8%

0.9934

0.0

501

19.2%

116

17.8%

0.4082

3.6

 75–84

8541

28.2%

237

30.0%

0.2648

4.0

770

29.5%

200

30.6%

0.5657

2.5

 85 or older

15738

52.0%

396

50.2%

0.3117

3.6

1341

51.3%

337

51.6%

0.9025

0.5

Gender

 Female

23020

76.1%

585

74.1%

0.2089

4.5

1946

74.5%

498

76.3%

0.3535

4.1

Region

 Northeast

8610

28.5%

285

36.1%

<0.001

16.4

895

34.3%

230

35.2%

0.6453

2.0

 Midwest

10375

34.3%

219

27.8%

0.0001

14.2

739

28.3%

185

28.3%

0.9845

0.1

 South

10239

33.8%

261

33.1%

0.6563

1.6

905

34.6%

224

34.3%

0.8685

0.7

 West

1033

3.4%

23

2.9%

0.4453

2.8

73

2.8%

14

2.1%

0.3557

4.2

Race/Ethnicity

 White

24337

80.4%

612

77.6%

0.0455

7.0

2065

79.1%

527

80.7%

0.3523

4.1

 Black

4198

13.9%

128

16.2%%

0.06

6.6

392

15.0%

92

14.1%%

0.5545

2.6

 Other

1723

5.7%

49

6.2%

0.5373

2.2

155

5.9%

34

5.2%

0.4765

3.2

Insurance Type

 Medicare only

5812

19.2%

151

19.1%

0.9607

0.2

460

17.6%

129

19.8%

0.2025

5.5

 Medicaid only

5221

17.3%

112

14.2%

0.0245

8.4

366

14.0%

84

12.9%

0.4463

3.4

 Medicare and Medicaid dual

19225

63.5%

526

66.7%

0.0712

6.6

1786

68.4%

440

67.4%

0.6252

2.1

  1. CDI Clostridium difficile infection, SD standard deviation; Std. Diff standardized difference, PSM propensity score matching