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Table 2 Proportion of pregnant women who met the recommendations and associations with socio-demographic characteristics, obstetric history, lifestyle factors, medical history in the study population (n = 7,915)

From: Compliance with national recommendations for exercise during early pregnancy in a Danish cohort

 

Met Danish recommendation

  

≥3.5 hours/week

 

Yes

No

Crude OR, (95 % CI)

Adjusted* OR, 95 % CI

Age (years)

    

 <25

107 (27.2)

287 (72.8)

0.57 (0.45-0.72)

 

 25-29

962 (41.1)

1380 (58.9)

1.062 (0.95-1.19)

 

 30-34

1252 (39.6)

1908 (60.4)

Ref.

 

 35-39

584 (35.4)

1066 (64.6)

0.84 (0.74-0.95)

 

 ≥40

107 (47.3)

119 (52.7)

0.67 (0.53-0.85)

 

Parity

    

 Nulliparous

1993 (42.3)

2724 (57.7)

Ref.

Ref.

 Multiparous

1016 (32.2)

2141 (67.8)

0.65 (0.59-0.71)

0.73 (0.65-0.82)

Previous miscarriage

    

 No

2331 (39.7)

3540 (60.3)

Ref.

Ref.

 Yes

688 (33.7)

1356 (66.3)

0.77 (0.69-0.86)

0.84 (0.74-0.96)

Degree of pregnancy planning

   

_

 Very planned

1353 (38.6)

2153 (61.4)

Ref.

 

 Rather planned

897 (42.0)

1238 (58.0)

1.15 (1.03-1.29)

 

 Neither planned or unplanned

437 (34.4)

833 (65.6)

0.84 (0.73-0.96)

 

 Rather unplanned

116 (32.8)

238 (67.2)

0.78 (0.62-0.98)

 

 Very unplanned

95 (30.4)

218 (69.6)

0.69 (0.54-0.89)

 

Method of conception

    

 Spontaneous

2563 (38.5)

4093 (61.5)

Ref.

Ref.

 Assisted reproductive technology

319 (35.7)

575 (64.3)

0.89 (0.77-1.03)

0.76 (0.64-0.91)

Smoking before pregnancy

    

 Yes

217 (28.6)

541 (71.4)

0.61 (0.52-0.72)

0.78 (0.63-0.95)

 No

2658 (39.6)

4054 (60.4)

Ref.

Ref.

Physical exercise before pregnancy

    

 Yes

2658 (48.8)

2784 (51.2)

Ref.

Ref.

 No

217 (9.3)

2112 (90.7)

0.06

0.06 (0.05-0.08)

Body mass index (kg/m2)

    

 <18.5

153 (37.4)

256 (62.6)

0.87 (0.71-1.07)

1.00 (0.77-1.28)

 18.5-24.9

2289 (40.8)

3321 (59.2)

Ref.

Ref.

 25-29.9

289 (30.7)

653 (69.3)

0.64 (0.55-0.75)

0.77 (0.65-0.92)

 ≥30

98 (30.1)

228 (69.9)

0.62 (0.49-0.80)

1.13 (0.83-1.52)

Disorders

   

_

 Chronic disorders

337 (35.5)

611 (64.5)

0.85 (0.74-0.98)

 

 Mental disorders

59 (31.2)

130 (68.8)

0.70 (0.51-0.95)

 

 None

2256 (39.4)

3469 (60.6)

Ref.

 

 Other disorders

196 (35.1)

362 (64.9)

0.83 (0.69-1.00)

 

Reads and understands Danish language

    

 Yes

2925 (39.0)

4580 (61.0)

Ref.

Ref.

 No

72 (20.6)

277 (79.4)

0.41 (0.31-0.53)

0.51 (0.34-0.71)

Cohabiting

   

_

 Yes

2817 (38.9)

4425 (61.1)

Ref.

 

 No

186 (31.5)

405 (68.5)

0.72 (0.60-0.86)

 

Education level

    

 Advanced degree

1624 (45.6)

1937 (54.4)

Ref.

Ref.

 3-4 years higher education

804 (35.5)

1463 (64.5)

0.66 (0.59-0.73)

0.64 (0.43-0.87)

 1-2 years higher education

122 (23.9)

389 (76.1)

0.37 (0.30-0.46)

0.58 (0.45-0.74)

 Skilled worker

64 (25.5)

187 (74.5)

0.41 (0.31-0.55)

0.50 (0.39-0.65)

 No education

137 (26.1)

387 (73.9)

0.42 (0.34-0.52)

0.69 (0.61-0.79)

Occupation

   

_

 Employed

2118 (40.0)

3179 (60.0)

Ref.

 

 Unemployed

156 (33.3)

313 (66.7)

0.75 (0.61-0.91)

 

 Student

456 (38.6)

726 (61.4)

0.94 (0.83-1.07)

 

 Other

55 (20.0)

220 (80.0)

0.38 (0.28-0.51)

 
  1. *Adjusted for parity, previous miscarriage, method of conception, smoking before pregnancy, physical exercise before pregnancy, body mass index, cohabiting, education level and occupation