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Table 1 Baseline characteristics of participants in the reliability and validity studies

From: Reliability and concurrent validity of the International Physical Activity Questionnaire short form among pregnant women

 

Reliability study

n = 88

Validity study

n = 64

Variable

Median (min-max)

Age at inclusion (years)

28 (20–42)

30 (22–44)

Gestational week at inclusion

19 (16–31)

21 (16–35)

Pre-pregnancy weight (kg)

64 (51–103)

63 (50–112)

Pre-pregnancy BMI (kg/m2)

22.6 (17.9–38.3)

22.3 (19.5–43.2)

 

n (%)

Educational level

  ≥ 4 years college/university

28 (31.8)

29 (45.3)

Occupation

 Employed outside home

 Long-term sick leave

78 (88.6)

1 (1.1)

55 (85.9)

0

Household income (NOK)

  ≤ 400,000

 401,000–700,000

  > 700,000

 Wish not to answer

12 (13.6)

33 (37.5)

38 (43.2)

5 (5.7)

20 (31.0)

14 (22.0)

30 (47.0)

-

Evaluation of own health

 Good/very good

78 (88.6)

59 (92.2)

Marital status

 Married/cohabitant/partner

 Single

86 (97.7)

1 (1.1)

61 (95.3)

2 (3.1)

Tobacco habits

 Non-smoker

 Smoked pre-pregnancy

 Daily smoker

 Daily snuff

67 (76.1)

19 (21.6)

2 (2.3)

0 (0)

48 (75.0)

13 (20.3)

3 (4.7)

2 (3.1)