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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