Table 1 Enrollment and sample collection.

From: Recreational water exposure and waterborne infections in a prospective salivary antibody study at a Lake Michigan beach

Set

Number of individuals

Percent of individuals (%)

Households

Percent of households (%)

Average household size

Number of samples

Average samples per person

Percent of initial samples (%)

All individuals enrolled in the study

1639

100

675

100

2.43

   

Contributed at least one saliva sample

1517

93

675

100

2.25

3681

2.43

100

Included in laboratory tests

906

55

403

60

2.25

2702

2.98

73

Included in final data analysis

872

53

395

59

2.21

2616

3.00

71