Table 4 Repeatability of selected characteristics

From: Golestan cohort study of oesophageal cancer: feasibility and first results

Characteristic

Agreement (%)

κ

Gender

97.8

0.95

Residence place

100.0

1.00

Age

100.0

1.00

Ethnicity

99.3

0.98

Marital status

99.3

0.96

Education level

96.3

0.94

Working at present

91.9

0.62

Working start age

67.1

0.53

Cancer in relatives

97.1

0.92

Alcohol drinking status

99.3

0.93

Cigarette smoking status

99.3

0.97

Cigarette smoking (amount)

100.0

1.00

Nass use status

99.3

0.95

Nass use (amount)

70.0

0.58

Opium use status

99.3

0.96

Opium use (amount)

81.8

0.73

Heartburn (frequency)

68.9

0.60

Regurgitation (frequency)

84.4

0.79

Vomiting (frequency)

85.7

0.72

Teeth count

88.3

0.86

Ischaemic heart disease

96.4

0.78

Stroke

100.0

1.00

Hypertension

96.4

0.83

Diabetes mellitus

99.3

0.85

Water supply

100.0

1.00

Income

55.6

0.39

House surface (m2)

71.4

0.59

Height

85.2

0.83

Weight

89.3

0.86

Body mass index

82.3

0.72