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Table 1 Background information on the study groups and the reference group (wrist fractures) for the survival analysis

From: Birth rate after major trauma in fertile-aged women: a nationwide population-based cohort study in Finland

 

TBI group

Spine fracture group

Pelvic fracture group

Hip or thigh fracture group

Wrist fracture group

Total number of women included*

22,780

3627

1820

1769

4957

Age at the start of follow-up

 15–24 years

10 273 (45.1%)

1476 (40.7%)

852 (46.8%)

707 (40.0%)

2004 (40.4%)

 25–34 years

5965 (26.2%)

1018 (28.1%)

481 (26.4%)

437 (24.7%)

1430 (28.8%)

 35–44 years

6542 (28.7%)

1133 (31.2%)

487 (26.8%)

625 (35.3%)

1523 (30.7%)

Number of women giving birth during the 5-year follow-up (%)

4324 (19.0%)

652 (18.0%)

301 (16.5%)

220 (12.4%)

925 (18.7%)

Age at the time of trauma (mean; SD)

27.6 (9.2)

28.5 (9.1)

27.4 (9.2)

28.4 (9.1)

28.4 (9.1)

Age at the time of delivery (mean; SD)

28.0 (5.6)

28.5 (5.5)

27.9 (5.4)

28.7 (5.4)

28.7 (5.4)

Follow-up period in weeks (mean; SD)

237.6 (55.6)

237.8 (56.3)

240.9 (52.3)

246.4 (44.6)

237.9 (55.6)

  1. *Because a 5-year follow-up period was required, only women with trauma occurring before 2014 and aged under 45 years at the time of trauma were included for Cox survival analysis