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Table 5 Sample size calculations for evaluation of G6PD diagnostic tests for radical cure

From: G6PD testing in support of treatment and elimination of malaria: recommendations for evaluation of G6PD tests

Expected sensitivity

Desired width of CI

Confidence level

Number of disease cases needed

Sample size

Prevalence rate 10%

Prevalence rate 15%

Prevalence rate 20%

0.8

0.06

0.95

715

7150

4767

3575

0.8

0.1

0.95

264

2640

1760

1320

0.9

0.06

0.95

417

4170

2780

2085

0.9

0.1

0.95

158

1580

1053

790

0.95

0.06

0.95

238

2380

1587

1190

0.95

0.1

0.95

94

940

627

470

0.96

0.06

0.95

200

2000

1333

1000

0.96

0.1

0.95

81

810

540

405

0.97

0.06

0.95

161

1610

1073

805

0.97

0.1

0.95

68

680

453

340

0.98

0.06

0.95

123

1230

820

615

0.98

0.1

0.95

55

550

367

275

0.99

0.06

0.95

87

870

580

435

0.99

0.1

0.95

44

440

293

220

  1. CI: confidence interval.