National Trachoma Assessment in the Lao People’s Democratic Republic in 2013–2014

Figures & data

Table 1. Evaluation units (EUs) for the National Trachoma Assessment, Lao People’s Democratic Republic, 2013–2014.

EU	Province	Surface area, km^Citation2	Population, n
1	Attapeu	10,320	123,816
2	Bokeo	6196	158,696
3	Bolikhamsai	14,863	247,556
4^a	Champasak A (Pakse, Phonethong, Soukhouma, Mounlapamok, & Khong districts)	15,415	337,129
5	Champasak B (Xanasomboun, Bachieng, Pakxong, Pathoumphone, & Champasak districts)		293,739
6	Hua Phan	16,500	288,287
7	Khammouane	16,315	353,535
8	Luang Namtha	9325	281,439
9	Luang Prabang	16,875	413,165
10	Oudomxay	15,370	281,439
11	Phongsali	16,270	166,635
12	Sayabouly	16,389	360,187
13	Salavan	10,691	358,761
14^a	Savannakhet A (Artsaphangthong, Phin, Sepone, Nong, Tharpangthong, Xonbouly, Vilabouly, Artsaphone & Phalanxay districts)	21,774	503,063
15	Savannakhet B (Kaisone, Outhoumphone, Songkhone, Champhone, Xaybouly & Xayphouthong districts)		369,096
16	Sekong	7665	98,481
17^a	Vientiane Prefecture (Naxaythong, Xaythany, Hadxayfong, Santhong & Pakngeum districts)		392,234
18	Vientiane Province	15,927	453,983
19	Xieng Khouang	15,880	258,742

^aThese EUs are mostly urban and were not surveyed.

Table 2. Prevalence of trachomatous inflammation – follicular (TF) and trichiasis in 16 evaluation units, Lao People’s Democratic Republic, 2013–2014.

Evaluation unit	Children examined, n	TF cases found, n	Age-adjusted TF prevalence 1–9-year olds, % (95% CI)	Adults examined, n	Adults with trichiasis, n	Age- and sex-adjusted prevalence of trichiasis in adults 15+ years, % (95% CI)	Age-adjusted prevalence of trichiasis in whole population, %
Attapeu	1382	28	1.5 (0.4–2.7)	1035	0	0.0	0.0
Bokeo	1394	6	0.4 (0.0–0.8)	1067	0	0.0	0.0
Bolikhamsai	1214	10	0.8 (0.0–1.8)	774	0	0.0	0.0
Champasak B	1293	3	0.2 (0.0–0.5)	741	0	0.0	0.0
Huaphan	1392	22	1.5 (0.4–3.1)	964	0	0.0	0.0
Khammouan	1248	2	0.2 (0.0–0.4)	803	0	0.0	0.0
Luang Namtha	1339	9	0.5 (0.1–1.0)	906	2	0.19 (0.00–0.52)	0.12
Luang Prabang	1175	2	0.2 (0.0–0.6)	1150	4	0.12 (0.00–0.33)	0.06
Oudomxay	1494	24	1.3 (0.3–2.1)	1083	0	0.0	0.0
Phongsaly	1277	31	2.2 (1.1–3.6)	1028	0	0.0	0.0
Salavan	1463	12	0.7 (0.0–1.8)	1010	0	0.0	0.0
Savanakhet B	1430	4	0.3 (0.0–0.7)	814	0	0.0	0.0
Vientiane	1241	11	0.6 (0.0–1.5)	852	0	0.0	0.0
Xiengkouang	1238	18	1.2 (0.6–1.9)	922	0	0.0	0.0
Sayabouly	1224	5	0.4 (0.0–0.8)	952	0	0.0	0.0
Sekong	1762	26	1.4 (0.6–2.3)	951	1	0.05 (0.00–0.16)	0.03

CI, confidence interval.

Figure 1. Prevalence of trachomatous inflammation – follicular (TF), Lao People’s Democratic Republic, 2013–2014.

Figure 2. Prevalence of trachomatous trichiasis (TT), Lao People’s Democratic Republic, 2013–2014.

Solomon AW, Kurlyo E. The Global Trachoma Mapping Project. Comm Eye Health 2014;27(85):18.

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