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Table 1 Participants characteristics by BMI trajectory groups

From: “I love having a healthy lifestyle" – a qualitative study investigating body mass index trajectories from childhood to mid-adulthood

Characteristic All (N = 50) Stable below average (n = 10) Stable average (n = 12) Increasing from average (n = 11) Increasing from very high (n = 6) Decreasing from very high (n = 11)
Age (years)
 Mean (range) 42 (38–47) 43 (39–45) 43 (39–46) 42 (38–46) 41 (39–45) 42 (38–47)
Sex
 Female n (%) 29 (58) 5 (50) 7 (58) 7 (64) 5 (83) 5 (45)
BMI (kg/m2) at four time-points
1 Mean (SD) 19.8 (3.4) 17.1 (1.2) 20.4 (2.5) 18.0 (3.4) 20.8 (3.1) 23.0 (3.1)
2Mean (SD) 28.4 (6.1) 21.7 (2.0) 26.6 (1.8) 32.8 (3.3) 39.3 (4.0) 27.0 (3.6)
3Mean (SD) 29.3 (6.8) 22.2 (3.1) 27.4 (2.5) 33.2 (3.6) 42.5 (3.4) 28.0 (3.4)
4Mean (SD) 29.7 (7.2) 22.0 (1.8) 27.3 (2.8) 37.0 (4.4) 40.9 (4.0) 27.2 (3.4)
Highest level of educationa
 High n (%) 28 (56) 7 (70) 5 (42) 5 (45) 1 (17) 10 (91)
 Medium n (%) 8 (16) 1 (10) 1 (8) 4 (36) 2 (33) 0 (0)
 Low n (%) 14 (28) 2 (20) 6 (50) 2 (18) 3 (50) 1 (9)
Employed b
 n (%) 46 (92) 9 (90) 11 (92) 10 (91) 5 (83) 11 (100)
With dependents
 n (%) 38 (76) 7 (70) 9 (75) 9 (82) 3 (50) 10 (91)
  1. 1Based on measured height and weight in 1985 2 Based on self-reported and measured height and weight in 2004–6 follow up3 Based on self-reported weight in 2009–11 follow up 4 Based on self-reported weight in 2014–16 follow up
  2. aLow: school only; Medium: Certificate/diploma, trade/apprenticeship; High: Bachelor/Higher degree
  3. bFor two participants work status was uncertain, but both were counted as unemployed because unemployment was implied in the transcripts
  4. Key: BMI body mass index