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Table 2 Associations of trait anxiety with gestation length in women with sponteneous deliveries, provider-intitiated deliveries, and all deliveries

From: Is maternal trait anxiety a risk factor for late preterm and early term deliveries?

  

Spontaneous deliveriesa

Provider-initiated deliveries

All deliveries

 

Gestation lengthb

Late preterm

Early term

Full term (reference)

Late preterm

Early term

Full term (reference)

Late preterm

Early term

Full term (reference)

 

N

1812

9701

56 527

1 007

4535

7824

2819

14054

64351

Unadjusted analyses

 

OR (95% CI)c

OR (95% CI)

OR (95% CI)

OR (95% CI)

OR (95% CI)

OR (95% CI)

OR (95% CI)

OR (95% CI)

OR (95% CI)

Anxiety groupsd

Very high

1.5 (1.1-2.0)

1.3 (1.2-1.5)

-

1.7 (1.2-2.3)

1.3 (1.0-1.6)

-

1.8 (1.4-2.2)

1.4 (1.3-1.6)

-

 

High

1.2 (0.9-1.6)

1.0 (0.9-1.2)

-

0.9 (0.6-1.2)

1.0 (0.9-1.3)

-

1,2 (1.0-1.5)

1.1 1.0-1.2)

-

 

Low

1.2 (1.1-1.4)

1.1 (1.0-1.1)

-

1.1 (1.0-1.3)

1.1 (1.0-1.2)

-

1.2 (1.2-1.4)

1.1 (1.1-1.2)

-

 

Very low (reference)

-

-

-

-

-

-

-

-

-

Adjusted analyses

 

OR (95% CI)

OR (95% CI)

OR (95% CI)

OR (95% CI)

OR (95% CI)

OR (95% CI)

OR (95% CI)

OR (95% CI)

OR (95% CI)

Anxiety groups

Very high

1.4 (1.0-1.8)

1.3 (1.1-1.5)

-

1.7 (1.2-2.4)

1.3 (1.0-1.6)

-

1.7 (1.3-2.0)

1.4 (1.3-1.6)

-

 

High

1.1 (0.9-1.5)

1.0 (0.9-1.1)

-

0.9 (0.6-1.3)

1.0 (0.9-1.3)

-

1.1 (0.9-1-4)

1.1 (1.0-1.2)

-

 

Low

1.2 (1.0-1.3)

1.0 (1.0-1.1)

-

1.1 (1.0-1.2)

1.1 (1.0-1.2)

-

1.2 (1.1-1.3)

1.1 (1.1-1.2)

-

 

Very low (reference)

-

-

-

-

-

-

-

-

-

  1. aSpontaneous deliveries = deliveries beginning by spontaneous labor or spontaneous rupture of the membranes
  2. bLate preterm: weeks 34-36; early term: weeks 37-38; full term: weeks 39-41
  3. cOR (95% CI): Odds Ratio and 95% Confidence Interval
  4. dCut-points at mean, and ± 2 standard deviations. ‘Very low’ = 1.0-1.25; ‘low to mean = 1.26-1.95; ‘mean to high’ = 1.96-2.30; ‘high’ = 2.31-4.00