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A Systems View Across Time and Space

Table 5 Missing and non-missing observations

From: Labour productivity among small- and medium-scale enterprises in Uganda: the role of innovation

Variable

Number of missing observations

Number of non-missing observations

Labour productivity (sales per worker)

247

451

Labour productivity (value added per worker)

570

128

Labour cost

288

410

Age

52

646

Age squared

52

646

Experience

28

670

Certification (yes = 1)

62

636

Tax rate (obstacle = 1)

5

693

Transport (constraint = 1)

1

697

Land access (constraint = 1)

27

671

Corruption (obstacle = 1)

6

692

Labour education (obstacle = 1)

7

691

Electricity (obstacle = 1)

1

697

Credit access (obstacle = 1)

21

677