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Table 1 Characteristics of households and individuals surveyed in 2017–2018

From: Epidemiology of onchocerciasis-associated epilepsy in the Mbam and Sanaga river valleys of Cameroon: impact of more than 13 years of ivermectin

 

Bilomo

Kelleng

Overall

Households

n = 193

n = 40

N = 233

Native households: n (%)

171 (89%)

36 (90%)

207 (89%)

Immigrant households: n (%)

22 (11%)

4 (10%)

26 (11%)

LOS** of immigrant households: median (IQR)

11 (6.25–28.5)

11 (7–12)

11 (6–27)

Median household size

7

5

6

Agriculture as main activity: n (%)

177 (92%)

33 (83%)

210 (90%)

Family history of death from epilepsy: n (%)

39 (20%)

5 (13%)

44 (19%)

Age at death of PWE: median (IQR)

22 (18–25)

20 (18-–25.25)

22 (18–25)

Participants

n = 1321

n = 204

N = 1525

Age: median (IQR)

18 (8–36)

21 (8.25–45)

18 (8–37)

Age distribution: n (%)

 0–9 years

409 (31%)

56 (27%)

465 (30%)

 10–19 years

297 (22%)

43 (21%)

340 (22%)

 20–29 years

170 (13%)

23 (11%)

193 (13%)

 30–39 years

160 (12%)

24 (12%)

184 (12%)

 40–49 years

85 (6%)

17 (8%)

102 (7%)

 ≥50 years

200 (15%)

41 (20%)

241 (16%)

Gender: n (%)

 Female

679 (51%)

98 (48%)

777 (51%)

 Male

642 (49%)

106 (52%)

748 (49%)

Epilepsy cases

Total number of confirmed PWE

n = 61

n = 16

N = 77

Crude epilepsy prevalence (95% CI)

4.6% (3.6–5.9)

7.8% (4.9–12.4)

5.1% (4.1–6.3)

Age and sex standardized prevalence

5.4%

9.3%

5.8%

Gender-specific prevalence: n (%)

 Female

29 (4.3%)

8 (8.2%)

37 (4.8%)

 Male

32 (5.0%)

8 (7.5%)

40 (5.3%)

Age-specific prevalence: n (prevalence)

 0–9 years

1 (0.2%)

0 (0.0%)

1 (0.2%)

 10–19 years

12 (4.0%)

2 (4.7%)

14 (4.1%)

 20–29 years

29 (17.1%)

7 (30.4%)

36 (18.7%)

 30–39 years

15 (9.4%)

4 (16.7%)

19 (10.3%)

 40–49 years

3 (3.5%)

2 (11.8%)

5 (4.9%)

 ≥ 50 years

1 (0.5%)

1 (2.4%)

2 (0.8%)

Age in years, PWE only: median (IQR)

24 (19.5–29.5)

28 (22.25–36.75)

25 (20–31)

Age at onset in years, PWE only: median (IQR)

13 (9–15)*

12 (9–15)

13 (9–15)*

Year of onset, PWE only: median (IQR)

2005 (1998–2012)*

2003 (1997–2008)

2005 (1998–2011)*

Type of seizures, PWE only: n (%)

 Only nodding seizures

2 (3.3%)

2 (12.5%)

4 (5.2%)

 Nodding and other types of seizures

7 (11.5%)

1 (6.2%)

8 (10.4%)

 Other types of seizures

52 (85.2%)

13 (81.2%)

65 (84.4%)

  1. CI, Confidence interval, IQR Interquartile range, *5 data missing, **LOS length of stay, PWE Persons with epilepsy