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Table 3 Crude and adjusted ORs for the Association Between Patient’s Characteristics and the Risk of Disseminated Histoplasmosis (DH) among all Patients Recorded in Selected Studies

From: Acute histoplasmosis in immunocompetent travelers: a systematic review of literature

Covariate a

DH (%) Present

non-DH Absent

Crude OR

Adjusted OR b (95% CI) b

56/573 (9.7)

517/573 (90.2)

Age

29 (22–31)

31 (23–45)

1.03 (1.01–1.05)

1.03 (0.99–1.07)

Male

68.7%

63.4%

1.16 (0.66–2.14)

1.13 (0.37–3.43)

Continent of destination, N (%)

USA-Canada

3.8%

22.5%

1.00 [Reference]

1.00 [Reference]

Central America

58.5%

26.9%

13.01 (3.82–81.43)

1.28 (0.21–7.67)

South America

30.2%

27.1%

6.66 (1.84–42.72)

1.61 (0.27–9.57)

Africa

5.7%

18.0%

1.87 (0.30–14.45)

2.38 (0.28–20.71)

Others c

1.9%

5.5%

2.05 (0.09–22.18)

0.33 (0.02–4.74)

Activity d, N (%)

Caves/Bat guano

64.2%

60.5%

1.18 (0.66–2.11)

34.20 (5.29–220.93)

Outdoor activities

42.8%

33.7%

1.48 (0.84–2.57)

4.61 (1.09–19.56)

Bird_chickens

10.7%

19.1%

0.50 (0.19–1.13)

7.19 (0.84–61.57)

Inhalation_soil

37.5%

16.0%

3.13 (1.72–5.62)

2.78 (0.94–8.29)

  1. Abbreviations, OR odds ratio, CI confidence interval
  2. a Relative frequencies are here presented, and the median (interquartile range) is reported for age
  3. b Adjusted for every other covariate through a multivariate logistic regression model
  4. c Includes: Asia, Oceania
  5. d Each activity was entered in the model as a single dummy variable, as most people did more than one activity during the trip. Caves/Bat’s guano: contact with bats excreta and/or visit to a cave. Outdoor activities: forest excursions/trekking, camping or other activities not involving visit to caves or direct contact with bats’ excreta. Bird_chickens: activities involving contact with chickens or other birds. Inhalation_soil: all activities involving building construction, renovation, excavation (biologists, building contractors, construction workers, soldiers, volunteers involved in churches or other buildings renovation)