Completing Baseline Mapping of Trachoma in Nepal: Results of 27 Population-Based Prevalence Surveys Conducted in 2013 and 2014

Figures & data

Figure 1. Map of Nepal showing districts previously surveyed (in 1996–2012) and districts surveyed in 2013–2014.

Table 1. Characteristics of survey population, population-based trachoma surveys, Nepal, 2013–2014.

			Children aged 1–9 years		Adults aged ≥15 years
Region	District	Survey year	Number examined	Proportion female (%)	Number examined	Proportion female (%)
Central	Dhanusha	2013	2,000	44.2	4,000	48.5
Central	Sindhuli	2013	2,000	47.2	4,000	56.5
East	Bohjpur	2013	2,000	46.8	4,000	52.5
East	Ilam	2013	2,000	48.7	4,000	50.5
East	Morang	2013	2,000	55.5	4,000	53.9
East	Panchthar	2013	2,000	47	4,000	50.6
East	Saptari	2014	2,000	47.4	4,000	58.9
East	Shankhuwasava	2013	1,997	43.8	4,000	49.17
East	Sunsari	2013	2,000	43.4	4,000	48.5
East	Taplejung	2013	2,000	48.6	4,000	50.8
Far west	Baitadi	2013	1,999	39.7	3,999	50.8
Far west	Bajhang	2014	2,050	49	4,100	55.6
Far west	Dadeldhura	2014	2,004	46.5	3,993	55
Far west	Darchula	2014	2,002	47.8	3,993	50.1
Midwest	Dolpa	2014	2,000	46.5	3,999	47.7
Midwest	Pyuthan	2013	2,002	51.3	3,993	50.8
Midwest	Salyan	2013	2,000	48.4	3,999	57.1
West	Arghakhanchi	2013	2,000	47.1	3,985	49.8
West	Baglung	2013	2,000	48.1	3,998	57.7
West	Gorkha	2014	2,000	47.1	3,994	54.8
West	Lamjung	2014	2,000	49.2	3,958	52.8
West	Myagdi	2014	2,000	47.4	3,999	54.6
West	Palpa	2014	2,000	48.9	3,995	51.2
West	Parbat	2014	2,007	48.2	3,991	55.6
West	Rupandehi	2014	2,000	48.5	3,995	50.5
West	Syanja	2014	2,005	45.8	3,994	58.2
West	Tanahun	2014	1,975	46.9	4,068	63.1
Total			54,041	47.4	108,053	53.2

Table 2. Prevalence of TF among children aged 1–9 years and trichiasis among adults aged ≥15 years, Nepal, 2013–2014.

Region	District	Prevalence of TF % in children 1–9 years (95% CI)^a	Prevalence of trichiasis % in adults ≥15 years (95% CI)^b
Central	Dhanusha	0	0.21 (0.02–0.48)
Central	Sindhuli	0.2 (0.0–0.3)	0.02 (0.0–0.04)
East	Bhojpur	0.1 (0.0–0.2)	0.03 (0.0–0.06)
East	Ilam	0	0
East	Morang	0.3 (0.1–0.5)	0.09 (0.01–0.19)
East	Panchthar	0	0
East	Saptari	0.1 (0.0–0.1)	0
East	Shankhuwasava	0.2 (0.0–0.3)	0
East	Sunsari	0.5 (0.0–1.2)	0.02 (0.0–0.04)
East	Taplejung	0.3 (0.0–0.6)	0
Far west	Baitadi	4.5 (1.4–9.4)	0
Far west	Bajhang	0	0.05 (0.0–0.09)
Far west	Dadeldhura	0.4 (0.0–0.8)	0.11 (0.01–0.27)
Far west	Darchula	0.2 (0.0–0.4)	0.11 (0.01–0.22)
Midwest	Dolpa	0.1 (0.0–0.1)	0
Midwest	Pyuthan	0	0
Midwest	Salyan	4.3 (2.4–6.2)	0.12 (0.04–0.21)
West	Arghakhanchi	0	0
West	Baglung	0.2 (0.0–0.4)	0
West	Gorkha	0.7 (0.1–1.1)	0.33 (0.08–0.65)
West	Lamjung	0.6 (0.0–1.5)	0.05 (0.0–0.13)
West	Myagdi	0.1 (0.0–0.2)	0.01 (0.0–0.01)
West	Palpa	0	0
West	Parbat	0.3 (0.0–0.6)	0
West	Rupandehi	0	0
West	Syanja	0.2 (0.0–0.4)	0.01 (0.0–0.03)
West	Tanahun	0.1 (0.0–0.2)	0.07 (0.0–0.17)

^aAdjusted for age in 1-year age bands (see text).

^bAdjusted for gender and age in 5-year age bands (see text).

CI, confidence interval.

Figure 2. Baseline prevalence of TF in children aged 1–9 years and trichiasis in adults aged ≥15 years, Nepal, 1996–2014. (a) TF prevalence from districts mapped in 1996–2012; (b) TF prevalence from districts mapped in 2013–2014; (c) TF prevalence combining data from all surveys conducted in 1996–2014; (d) Trichiasis prevalence from districts mapped in 1996–2012; (e) Trichiasis prevalence from districts mapped in 2013–2014; (f) Trichiasis prevalence combining data from all data surveys conducted in 1996–2014.