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Table 1 Number of women in each combination of maternal educational level and mental health conditions and percentages stratified by age group, number (%)

From: The risk of preterm birth in combinations of socioeconomic position and mental health conditions in different age groups: a Danish nationwide register-based cohort study

Maternal age, years

Educational level

Mental health condition

No

Minor

Moderate/severe

≤23a

High/intermediate

21,465 (34.4)

2831 (4.5)

2956 (4.7)

Low

23,148 (37.1)

3382 (5.4)

8581 (13.8)

24-30a

High

92,076 (40.4)

10,964 (4.8)

5196 (2.3)

Intermediate

77,807 (34.1)

10,476 (4.6)

7915 (3.5)

Low

15,562 (6.8)

3078 (1.4)

4765 (2.1)

≥31a

High

61,781 (49.3)

11,027 (8.8)

5096 (4.1)

Intermediate

30,621 (24.4)

5343 (4.3)

3274 (2.6)

Low

5654 (4.5)

1219 (1.0)

1306 (1.0)

  1. aPercentages are calculated within strata; thus, each age group sums to 100%