Table 2 Characteristics of the six municipalities by land area, population (year 2000) and number of study children enrolled in the study.

Land area (in km²)

30.61

42.88

55.37

34.02

43.77

150.22

356.87

Total population

77, 700

26, 415

21,337

14,996

12,702

16,837

169,987

PNF13 and EPI children enrolled

6,102

2,259

1,564

846

926

1,074

12,771

Waypoints collected

Households

   At birth

5,784

2,234

1,551

835

919

1,060

12,383

   Different at 2 years old

437

101

45

46

77

93

799

   Transient

7

6

1

1

6

5

26

Landmarks

624

607

260

102

191

198

1,982