The Prevalence of Trachoma in Tigray Region, Northern Ethiopia: Results of 11 Population-Based Prevalence Surveys Completed as Part of the Global Trachoma Mapping Project

Figures & data

Figure 1. Adjusted prevalence of trachomatous inflammation – follicular (TF) in children aged 1–9 years by evaluation unit, Global Trachoma Mapping Project, Tigray Region, Ethiopia, 2013.

Table 1. Prevalence of trachomatous inflammation – follicular (TF) in children aged 1–9 years by evaluation unit, Global Trachoma Mapping Project, Tigray Region, Ethiopia, 2013.

Evaluation unit	Examined, n	TF cases, n	Unadjusted TF, %	Adjusted^a TF, % (95% CI^b)
Laelay Maychew, Naeder Adet, Tahtay Maychew	766	266	34.7	32.6 (27.0–38.9)
Adwa, Mereb Leke, Entecho	792	212	26.8	23.7 (16.6–29.7)
Kolla Tembiyen, Werei Leke, Tanqua Abergele	857	249	29.1	29.5 (22.3–34.6)
Degua Temben, Saharti Samre, Hintalo Wejirat, Enderta	936	419	44.7	39.1 (30.0–47.3)
Erob, Ganta Afeshum, Glomekada, Saesie Tsaedaemba	762	163	21.4	22.5 (14.4–28.5)
Hawzen, Wukero, Atsbi Wenberta	973	185	19.0	20.0 (15.8–23.3)
Wefla, Alamata	942	408	43.3	41.4 (33.8–51.2)
Alaje, Endamehoni, Raya Azebo	930	373	40.1	41.0 (32.1–50.0)
Kafta Humera, Welkait, Tsegede	1013	100	9.9	9.3 (6.0–11.3)
Asgede Tsimbila, Medebay Zana, Tahtay Koraro, Tselemti	1007	185	18.4	18.3 (13.1–23.9)
Laelay Adiyabo, Tahtay Adiyabo	1045	113	10.8	10.2 (6.3–14.6)

^aAdjusted for age in 1-year age bands using the 2007 Ethiopian national census data for Tigray Region.

^b95% CIs from the 2.5th and 97.5th centiles of bootstrapped adjusted cluster-level proportions, to account for the clustered sampling design.

CI, confidence interval.

Table 2. Prevalence of trichiasis in those aged 15 years and older by evaluation unit, Global Trachoma Mapping Project, Tigray Region, Ethiopia, 2013.

Evaluation unit	Examined, n	Trichiasis cases, n	Unadjusted trichiasis, %	Adjusted^a trichiasis, % (95% CI^b)
Laelay Maychew, Naeder Adet, Tahtay Maychew	1237	50	4.0	1.9 (1.1–2.8)
Adwa, Mereb Leke, Entecho	1217	46	3.8	2.3 (1.6–3.0)
Kolla Tembiyen, Werei Leke, Tanqua Abergele	1208	29	2.4	1.4 (0.8–1.8)
Degua Temben, Saharti Samre, Hintalo Wejirat, Enderta	1435	66	4.6	2.6 (1.8–3.3)
Erob, Ganta Afeshum, Glomekada, Saesie Tsaedaemba	1055	25	2.4	0.7 (0.3–1.2)
Hawzen, Wukero, Atsbi Wenberta	1366	46	3.4	2.0 (1.5–2.8)
Wefla, Alamata	1574	61	3.9	2.3 (1.2–3.0)
Alaje, Endamehoni, Raya Azebo	1595	48	3.0	1.9 (1.5–3.0)
Kafta Humera, Welkait, Tsegede	1267	14	1.1	0.6 (0.1–1.1)
Asgede Tsimbila, Medebay Zana, Tahtay Koraro, Tselemti	1550	36	2.3	1.3 (0.8–1.9)
Laelay Adiyabo, Tahtay Adiyabo	1511	35	2.3	1.3 (0.7–1.8)

^aAdjusted for sex and age in 5-year age bands using the 2007 Ethiopian national census data for Tigray Region.

^b95% CIs from the 2.5th and 97.5th centiles of bootstrapped adjusted cluster-level proportions, to account for the clustered sampling design.

CI, confidence interval.

Figure 2. Adjusted prevalence of trichiasis in those 15 years and older by evaluation unit, Global Trachoma Mapping Project, Tigray Region, Ethiopia, 2013.