RESULTS	Women in the higher risk depression groups were more likely to score 16 or higher on the CES-D ( percent follow-up examinations with a score of > or = 16 : high-risk group = 35.7 % , with 95 % confidence interval [ CI ] = 32.5 % to 38.9 % ; medium-risk group = 19.2 % , with 95 % CI = 18.1 % to 20.3 % ; and low-risk group = 8.7 % , with 95 % CI = 8.3 to 9.1 % ) and to have these scores more frequently and for longer periods than women in the lower risk groups .\