Table 2 Characteristics at young adulthood and joining weight loss study, and weight change between those times (n = 501)

Age at joining weight loss study^a

–

47.6 (8.4)

Height (m)^a

–

1.64 (0.06)

Ethnicity^b

–

 White

480 (95.8)

 Asian or Asian British

8 (1.6)

 Black or Black British

8 (1.6)

 Mixed

2 (0.6)

 Other

3 (0.4)

English Index of Multiple Deprivation quintile^b

–

 1 (most deprived)

64 (12.8)

 2

67 (13.4)

 3

95 (19.0)

 4

123 (24.6)

 5 (least deprived)

152 (30.3)

Premenopausal / Peri or postmenopausal^b

–

271 (54.7) / 224 (45.3)

Missing n = 6

Parous^b

–

392 (79.0)

Missing n = 5

Lifetime breast cancer risk (%)^c

–

29.0 (22.4–33.3)

Missing n = 12

Weight (kg)^c

60.3 (54.0–66.7)^d

Missing n = 32

22.1 (20.3–24.1)^d

Missing n = 32

29.9 (27.0–34.7)

Missing n = 0

 Underweight (< 18.5 kg/m²)

33 (7.0)

0 (0.0)

 Healthy weight (18.5–24.9 kg/m²)

350 (74.6)

37 (7.4)

 Overweight (25–29.9 kg/m²)

63 (13.4)

216 (43.1)

 Obese (≥30.0 kg/m²)

23 (4.9)

248 (49.5)

Weight change since young adulthood (kg)^c

–

20.5 (14.0–29.7)

Missing n = 32

Weight change since young adulthood (%)^c

–

33.7 (23.4–50.2)

Missing n = 32

Duration between young adulthood weight and study entry (y)^a

–

29.3 (8.6)

Weight change per year (kg)^c

–

0.73 (0.51–1.08)

Missing n = 32

Weight change category^b:

–

 Lost ≤5%

6 (1.3)

 Maintained (within ±5%)

6 (1.3)

 Gained 5–9.9%

10 (2.1)

 Gained ≥10%

447 (95.3)

Missing n = 32