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Table 2 Data and results for the scores derived by principal component analysis (PCA)

From: Factors that shape pregnant women’s perceptions regarding the safety of cannabis use during pregnancy

 

Factor loadings

Every day

Most days

A few times

Never

Overwhelmed/exhausted (21.4% of variance)

 Had difficulty sleeping

0.799

16.0%

27.3%

43.6%

13.1%

 Felt exhausted

0.762

21.0%

34.9%

41.5%

2.6%

 I was in pain

0.639

6.2%

7.7%

42.3%

43.8%

 Felt overwhelmed

0.631

9.0%

22.7%

50.5%

17.7%

Happy/optimistic (18.8% of variance)

 Felt optimistic and hopeful

0.843

28.0%

50.9%

17.8%

3.3%

 Felt safe and relaxed

0.748

53.8%

36.7%

8.7%

0.7%

 Felt happy and excited

0.692

32.1%

51.3%

14.8%

1.8%

Health concerns (15.3% of variance)

 Worried about being able to eat healthy

0.694

8.3%

11.6%

31.2%

48.9%

 Worried about gaining too much weight

0.686

11.8%

12.3%

35.7%

40.4%

 Nausea and/or vomiting

0.666

5.1%

10.1%

42.8%

42.0%

  1. The PCA used the answers to: “During the week before this day how often did you experience the following?” Three axes with eigenvalues above 1.0 were determined that explained 55.5% of the variance. The Kaiser-Meyer-Olkin Measure of Sampling Adequacy was 0.691, indicating moderate adequacy; Bartlett’s test of Sphericity was 469.6. df = 45, P < 0.001. Percentages given exclude women who did not answer the question