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Table 2 Characteristics of cases and contacts (13th April – August 31st 2015)

From: Use of a mobile application for Ebola contact tracing and monitoring in northern Sierra Leone: a proof-of-concept study

 

Paper Daily Reporting Form

ECT Smartphone App

Cases

Contacts

Cases

Contacts

Characteristic

N (%)

N (%)

N (%)

N (%)

Total

25a

408

18b

646

Age

 < 5 yrs

4 (16%)

51 (13%)

2 (13%)

123 (19%)

 5–14 yrs

2 (8%)

119 (29%)

2 (13%)

141 (22%)

 15 – 44 yrs

13 (52%)

188 (47%)

9 (56%)

272 (42%)

 ≥ 45 yrs

6 (24%)

46 (11%)

3 (19%)

110 (17%)

 Median (IQR)

26 (20–44)

18 (7–30)

28.5 (18–40)

20 (6–35)

Sex

 Male

10 (40%)

205 (50%)

9 (50%)

317 (49%)

 Female

15 (60%)

203 (50%)

9 (50%)

329 (51%)

Mortality status

 Alive

21 (84%)

407c (100%)

11 (61%)

646 (100%)

 Dead

4 (16%)

7 (39%)

Chiefdom

    

 1

5 (28%)

72 (11%)

 2

24 (96%)

376 (92%)

4 (22%)

70 (11%)

 3

10d (2%)

 4

1 (6%)

65 (10%)

 5

5 (28%)

159 (25%)

 6

3 (17%)

270 (42%)

 7

1 (4%)

32 (8%)

  1. aFour cases followed using the paper Daily Reporting Form had no contacts
  2. b Data on age and sex were available for only 16 cases (not for two ‘secret burials’)
  3. c Data on 407 contacts was available. All contacts were alive
  4. dThe 10 contacts in this Chiefdom came from a case that occurred in Chiefdom 2