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Table 2 Demographic and epidemiological characteristics and predisposing factors of patients solely infected with Borrelia burgdorferi s.l. and patients infected with B. burgdorferi s.l. who also had Babesia divergens IgG antibodies

From: Retrospective study of the epidemiological risk and serological diagnosis of human babesiosis in Asturias, Northwestern Spain

 

All (n = 120)

B. burgdorferi s.l. (n = 73)

B. burgdorferi s.l./B.divergens (n = 47)

Statistics

Demography and epidemiology

Gender

 M

81 (67.5%)

47 (64.4%)

34 (72.3%)

χ2 = 0.825, df = 1, P = 0.364

 F

39 (32.5%)

26 (35.6%)

13 (27.7%)

 

Age

 Years (n = 119)

57.19 (43.50–72.24)

58.0 (42.8–73.6)

56.4 (45.5–71.8)

U = 1649.4, Z = -0.231, P = 0.817

Occupation

 Farmer

8(10.0%)

4 (8.5%)

4 (12.1%)

χ2 = 4.90, df = 3, P = 0.179

 Cattle breeder

5 (6.3%)

3 (6.4%)

2 (6.1%)

 

 Open air activity

3 (3.8%)

0 (0%)

3 (9.1%)

 

 Other

64 (80.0%)

40 (85.1%)

24 (72.7)

 

Tick bite identified

 Yes

26 (23.2%)

17 (24.6%)

9 (20.9%)

χ2 = 0.204, df = 1, P = 0.651

 No

86 (76.8%)

52 (75.4%)

34 (79.1%)

 

Tick removal

 Yes

20 (17.9%)

12 (17.4%)

8 (18.6%)

χ2 = 0.027, df = 1, P = 0.87

 No

92 (82.1%)

57 (82.6%)

35 (81.4%)

 

Predisposing factors

 Yes

106 (91.4%)

64 (90.4%)

42 (93.3%)

χ2 = 0.356, df = 1, P = 0.738

 No

10 (8.6%)

7 (9.6%)

3 (6.7%)

 

Transfusion

 Yes

0 (0%)

0 (0%)

0 (0%)

-

 No

114 (100%)

69 (100%)

45 (100%)

 

Asplenia

 Yes

0 (0%)

0 (0%)

0 (0%)

-

 No

114 (100%)

69 (100%)

45 (100%)

 

Immunosuppression

 Yes

4 (3.5%)

2 (2.9%)

2 (4.4%)

χ2 = ,0.206 df = 1, P = 0.644

 No

111 (96.5%)

68 (97.1%)

43 (95.6%)

 

Age > 50 years

 Yes

73 (63.9.6%)

43 (59.7%)

33 (70.2%)

χ2 = 1.356, df = 1, P = 0.244

 No

43 (36.1%)

29 (40.3%)

14 (29.8%)

 

Outdoor hobbies

 Yes

79 (76.7%)

45 (72.6%)

34 (82.9%)

χ2 = 1.478, df = 1, P = 0.224

 No

24 (23.3%)

17 (27.4%)

7 (17.1%)

 

Non-professional animal contact

 Yes

34 (33.0%)

18 (29.0%)

16 (39.0%)

χ2 = 1.114, df = 1, P = 0.291

 No

69 (67.0%)

44 (71.0%)

25 (61.0%)

 
  1. *Age is described as median (IQ range) and the remainder variables as n (%)