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Table 1 Epidemiological characteristics of scrub typhus cases in Nepal, 2016*

From: An outbreak investigation of scrub typhus in Nepal: confirmation of local transmission

Variables Male n (%);
n = 163
Female n (%);
n = 238
Total n (%);
n = 401
p-value
Age in years, median (IQR) 24.0 (11.0–50.0) 25.0 (17.0–39.0) 25.0 (14.0–42.0) 0.237
Age group
 Below 10 37 (22.7) 21 (8.8) 58 (14.5) <  0.001
 10–19 37 (22.7) 51 (21.4) 88 (21.9)  
 20–29 19 (11.7) 64 (26.9) 83 (20.7)  
 30–39 16 (9.8) 44 (18.5) 60 (15.0)  
 40–49 11 (6.7) 21 (8.8) 32 (8.0)  
 50–59 28 (17.2) 25 (10.5) 53 (13.2)  
 60 and above 15 (9.2) 12 (5.0) 27 (6.7)  
Children vs adults
 15 years and below 63 54 117 0.001
 Above 15 years 100 184 284  
Ethnicity
 Brahmin/Chhetri 72 (44.2) 105 (44.1) 177 (44.1) 0.87
 Janajati/Aadhibasi 74 (45.4) 104 (43.7) 178 (44.4)  
 Madheshi 5 (3.1) 5 (2.1) 10 (2.5)  
 Dalit 9 (5.5) 18 (7.6) 27 (6.7)  
 Others 3 (1.8) 6 (2.5) 9 (2.2)  
Month (seasonality)
 June 12 (7.4) 5 (2.1) 17 (4.2) 0.01
 July 27 (16.6) 29 (12.2) 56 (14.0)  
 August 71 (43.6) 93 (39.2) 164 (41.0)  
 September 36 (22.1) 69 (29.1) 105 (26.2)  
 October 17 (10.4) 41 (17.3) 58 (14.5)  
Ecological region
 Mountain 8 (4.9) 2 (0.8) 10 (2.5) 0.03
 Hill 28 (17.2) 37 (15.5) 65 (16.2)  
 Terai 127 (77.9) 199 (83.6) 326 (81.3)  
Administrative region
 Eastern 12 (7.4) 6 (2.5) 18 (4.5) 0.08
 Central 75 (46.0) 107 (45.0) 182 (45.4)  
 Western 39 (23.9) 56 (23.5) 95 (23.7)  
 Mid-Far West 37 (22.7) 69 (29.0) 106 (26.4)  
Clinical outcome
 Cured 157 (96.3) 232 (97.5) 389 (97.0) 0.50
 Death (CFR) 6 (3.7) 6 (2.5) 12 (3.0)  
  1. *Scrub typhus patients with complete line-listing information (n = 401) were included in this analysis
  2. IQR Inter-quartile range; CFR Case fatality rate
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