Associations between serum levels of insulin-like growth factor-I and bone mineral acquisition in pubertal children: a 3-year follow-up study in Hamamatsu, Japan

Table 4 Relationships between change in bone mineral parameters from baseline to follow-up and quartile groups of IGF-I levels

IGF-I insulin-like growth factor-I, TBLH total body less head, BMC bone mineral content, N number, Q quartile, aBMD areal bone mineral density, TB total body, BMAD bone mineral apparent density as an estimate of volumetric bone mineral density, ns not significant, IGF-I Q1 the lowest quartile group of IGF-I levels, IGF-I Q4 the highest quartile group of IGF-I levels
ANOVA and ANCOVA were performed to explore differences among quartiles
Multiple linear regression analysis was performed for trend tests from the lowest to highest quartile of IGF-I
P < 0.05 was considered statistically significant
^aAdjusted for 25-hydroxyvitamin D, sedentary behavior, pubic hair appearance, weight, and height at baseline
^bAdjusted for 25-hydroxyvitamin D, sedentary behavior, pubic hair appearance, and weight at baseline

ISSN: 1880-6805