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Table 1 Calls sample, calls needed per completed survey by country

From: A cost study for mobile phone health surveys using interactive voice response for assessing risk factors of noncommunicable diseases

Country

Sample size

Price per minute of call (USD)

Average minutes of an incomplete call

Average minutes of a complete call

Paid calls needed per completed survey

Total sample of calls

Subsample of young adults (<  45 years)

Bangladesh

20,467

8531

0.05

1

11

41

Colombia

5800

3410

0.05

2

10

46

Uganda

4947

3701

0.10

1

10

15

  1. Source: Total sample of calls is the number of calls estimated to obtain a sample of calls that is representative of the age-sex population distribution. Subsample of calls is the number of calls estimated to obtain a sample of calls that is representative of the population that is less than 45 years old. Calls needed per completed survey represent the number of paid calls required to obtain in average one complete survey