Table 1. Characteristics of the study participants.

Characteristic	BEST Gothenburg cohort, born 1945–1961 (n = 31,971)
Childhood BMI (age 8 years, kg/m2)	15.7 (1.4)
Age at PHV (years)	14.1 (1.1)
Young adult height (cm)	179.3 (6.4)
Country of origin
Sweden	26,749 (83.7%)
Other countries	5,222 (16.3%)
Participants with at least 1 incident fracture after 20 years of age
All fractures	5,872 (18.4%)
Non-vertebral fractures	5,731 (17.9%)
Birthweight (kg)a	3.58 (0.55)
Adult educational levelb
Elementary school	5,548 (17.9%)
Secondary school	13,520 (43.6%)
University level	11,911 (38.4%)

Values are given as mean (SD) or number (percent).

^aBirthweight was available in a subsample (n = 30,365).

^bAdult educational level at 45 years of age was available in a subsample (n = 30,979).

BEST, BMI Epidemiology Study; BMI, body mass index; PHV, peak height velocity.