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Table 3 Factors associated with non-left side sleep position (n = 375)

From: Survey of maternal sleep practices in late pregnancy in a multi-ethnic sample in South Auckland, New Zealand

Variable

Left side sleep

Non-left sleep

Univariable OR

Adjusted OR

(n = 114)

(n = 261)

(95% CI)

(95% CI)

n (row %)

n (row %)

  

Maternal age (years) [mean (SD)]

28.6 (5.7)

27.0 (5.4)

0.95 (0.91–0.99)*

0.97 (0.92–1.01)

Ethnicity (prioritised)

 Maori

23 (26.4)

64 (73.6)

2.12 (1.11–4.05)*

2.64 (1.23–5.66)*

 Pacific

43 (27.9)

111 (72.1)

1.96 (1.12–3.45)*

2.91 (1.46–5.78)*

 Asian

13 (24.5)

40 (75.5)

2.34 (1.09–5.03)*

1.79 (0.79–4.05)

 European & Other

35 (43.2)

46 (56.8)

Reference

Reference

Live with partner

 No

19 (27.1)

51 (72.9)

Reference

Reference

 Yes

95 (31.2)

210 (68.9)

0.82 (0.46–1.47)

1.36 (0.70–2.65)

Gestational age (weeks) [mean (SD)]

35.3 (3.6)

35.3 (3.4)

1.01 (0.94–1.07)

1.03 (0.96–1.10)

BMI [mean (SD)]

34.9 (7.6)

32.5 (7.1)

0.96 (0.93–0.99)*

0.93 (0.89–0.96)*

Sleeping on left side of bed

 No

43 (20.0)

172 (80.0)

3.19 (2.02–5.04)*

3.29 (2.03–5.32)*

 Yes

71 (44.4)

89 (55.6)

Reference

Reference

Received any advice on sleep position

 No

36 (30.3)

83 (69.8)

1.01 (0.63–1.62)

0.99 (0.59–1.66)

 Yes

78 (30.5)

178 (69.5)

Reference

Reference

  1. OR Odds ratio, CI Confidence interval, BMI Body mass index
  2. *Statistically significant (p ≤ 0.05)
  3. Multivariable model is adjusted for all the variables in the table
  4. Maternal age, gestational age, and BMI were treated as continuous variables and ORs are for a 1 unit increase