Table 3: Mean (std.) of the change score data for the three BMI groups, means, and standard deviations.

OutcomeNonobese ( )Obese ( )P value

OKS (pre-6mo) −11.5 (10.9)−15.3 (8.8)0.129
OKS (pre-1yr) −13.2 (9.9)−17.0 (9.1)0.120
SF12 PCS (pre-6mo) 8.4 (13.2)6.9 (10.6)0.603
SF12 PCS (pre-1yr) 11.3 (11.9)6.7 (7.9)0.061
SF12 MCS (pre-6mo) 0.5 (11.8)3.1 (12.3)0.233
SF12 MCS (pre-1yr)0.7 (9.3)2.7 (10.8)0.428

PCS: physical component summary of the SF12, MCS: mental component summary of SF12.