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Table 2 Sample size for a highly complex study design for effect and design of specific proportion

From: Detection and follow-up of chronic obstructive pulmonary disease (COPD) and risk factors in the Southern Cone of Latin America. the pulmonary risk in South America (PRISA) study

Proportion

Design Effect

    
 

1.0

1.5

2.0

2.5

3.0

0.26-0.50

30

45

60

75

90

0.25

32

48

64

80

96

0.20

40

60

80

100

120

0.15

53

80

107

133

160

0.10

80

120

160

200

240

0.05

160

240

320

400

480