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Table 1 Univariate analysis of factors influencing UTI

From: Determinants of urinary tract infection in hospitalized patients with acute ischemic stroke

Variables

Total (n = 342)

Controls

(n = 311)

UTI

(n = 31)

p value

Sex

    

Male, n (%)

207 (60.5)

191 (61.4)

16 (51.6)

0.287

Age (years), median (IQR)

66 (54, 77)

65 (54, 76)

77 (63, 84)

0.002

Age ≥ 70, n (%)

141 (41.2)

121 (38.9)

20 (64.5)

0.006

Risk factors for stroke

    

Alcoholism, n (%)

87 (25.4)

83 (26.7)

4 (12.9)

0.093

Smoking, n (%)

140 (40.9)

134 (43.1)

6 (19.4)

0.010

Hypertension, n (%)

246 (71.9)

225 (72.3)

21 (67.7)

0.59

Diabetes mellitus, n (%)

101 (29.5)

94 (30.2)

7 (22.6)

0.37

Chronic kidney disease, n (%)

79 (23.1)

68 (21.9)

11 (35.5)

0.086

Dyslipidemia, n (%)

185 (54.1)

167 (53.7)

18 (58.1)

0.64

Coronary artery disease, n (%)

42 (12.3)

34 (10.9)

8 (25.8)

0.038

Atrial fibrillation, n (%)

62 (18.1)

47 (15.1)

15 (48.4)

< 0.001

Previous stroke, n (%)

52 (15.2)

47 (15.1)

5 (16.1)

0.80

Neurological manifestations

    

Alteration of consciousness, n (%)

59 (17.3)

42 (13.5)

17 (54.8)

< 0.001

Weakness, n (%)

303 (88.6)

272 (87.5)

31 (100)

0.035

Vertigo, n (%)

58 (17.0)

57 (18.3)

1 (3.2)

0.033

Aphasia, n (%)

54 (15.8)

44 (14.1)

10 (32.3)

0.017

Initial vital signs on admission

    

SBP, mean ± SD (mmHg)

160 ± 31

162 ± 31

146 ± 31

0.006

SBP > 120 mmHg, n (%)

306 (89.5)

284 (91)

22 (71)

0.002

DBP, mean ± SD (mmHg)

92 ± 20

93 ± 20

83 ± 19

0.013

 h, mean ± SD (beats/minute)

80 ± 19

80 ± 18

87 ± 26

0.043

Temperature, mean ± SD (°C)

36.8 ± 0.4

36.8 ± 0.4

37.0 ± 0.5

0.007

RR, mean ± SD (breaths/minute)

21 ± 3

21 ± 3

22 ± 5

0.034

Laboratory indicators

    

Glucose, mean ± SD (mg/dL)

145 ± 76

144 ± 71

157 ± 117

0.69

BUN, mean ± SD (mg/dL)

16 ± 10

16 ± 9

21 ± 13

0.005

Creatinine, mean ± SD (mg/dL)

1 ± 0.6

1 ± 0.7

1 ± 0.4

0.45

Hemoglobin, mean ± SD (g/dL)

13 ± 2

13 ± 2

12 ± 2

0.092

White blood cell count, mean ± SD (cells/mm3)

9,138 ± 3,384

9,047 ± 3,255

10,058 ± 4,443

0.11

Neutrophil count, mean ± SD (%)

64 ± 14

63 ± 14

70 ± 13

0.006

Lymphocyte count, mean ± SD (%)

25 ± 12

26 ± 12

20 ± 10

0.005

Initial score on admission

    

mRS score, median (IQR)

4 (4, 5)

4 (3, 5)

5 (5, 5)

< 0.001

BI, median (IQR)

50 (25, 70)

55 (35, 70)

10 (0, 35)

< 0.001

GCS score, median (IQR)

15 (13, 15)

15 (14, 15)

10 (7, 13)

< 0.001

NIHSS score, median (IQR)

6 (3, 14)

5 (3, 12)

22 (15, 28)

< 0.001

NIHSS score ≥ 15, n (%)

83 (24.3)

58 (18.6)

25 (80.6)

< 0.001

Treatment

    

Thrombolysis (rt-PA), n (%)

47 (13.7)

40 (12.9)

7 (22.6)

0.17

Antiplatelets, n (%)

281 (82.2)

264 (84.9)

17 (54.8)

< 0.001

Anticoagulants, n (%)

52 (15.2)

40 (12.9)

12 (38.7)

< 0.001

Statins, n (%)

336 (98.2)

308 (99.0)

28 (90.3)

0.011

Devices

    

Retained Foley catheter, n (%)

88 (25.7)

62 (19.9)

26 (80.6)

< 0.001

NG tube placement, n (%)

82 (24.0)

56 (18.0)

26 (80.6)

< 0.001

Failed WST, n (%)

85 (24.9)

59 (19.0)

26 (83.9)

< 0.001

  1. BI, Barthel Index; BPH, benign prostatic hyperplasia; BUN, blood urea nitrogen; cells/mm3, cells per milliliter; DBP, diastolic blood pressure; GCS, Glasgow Coma Scale; g/dL, grams per deciliter; GFR, glomerular filtration rate; HR, heart rate; ml/min, milliliters per minute; IQR, interquartile range; mg/dL, milligrams per deciliter; mmHg, millimeters of mercury; mRS, modified Rankin Scale; n, number; NG, nasogastric; NIHSS, National Institutes of Health Stroke Scale; p value, comparisons between the control group and the urinary tract infection group; RR, respiratory rate; rt-PA, recombinant tissue plasminogen activator; SBP, systolic blood pressure; SD, standard deviation; UTI, urinary tract infection; WST, water-swallowing test