Responders and nonresponders to a walking intervention for sedentary women.
OBJECTIVE
Increasing evidence has indicated that people might be differentially influenced by intervention programs. The purpose of this secondary analysis was to identify groups of women who responded differently to a walking intervention. Data used in this secondary analysis were collected in a longitudinal study of a counseling intervention to increase walking among 248 initially sedentary women.


METHODS
A latent growth-mixture modeling approach was used to assess treatment effects on growth in physical activity and mood over time. Subgroups of participants who were responsive versus those who were nonresponsive to intervention were also identified. Logistic-regression analysis was conducted to confirm group membership and identify predictors associated with the identified subgroups.


RESULTS
Two subgroups (responders, nonresponders) were identified separately for physical activity and mood. Using several variables as predictors of group memberships, 92%-95% of the cases were correctly classified. The current study indicated that predictors for group membership were associated with the outcome variables.


CONCLUSIONS
These findings indicated that optimal interventions should be tailored to not only the physical, psychosocial, and environmental variables of each woman, but also to outcome variables of interest to the woman.


CONCLUSIONS
Nurses practicing in community and public health settings should determine physical activity interventions that are based on scientific findings and on outcomes that are important for the individual woman.
Nies
Mary A
MA
Health Sciences Center, State University of New York at Stony Brook, Stony Brook, NY, 11794, USA. maryannnies@yahoo.com
Sun
Yiyuan
Y
D000328:Adult; D000339:Affect; D016009:Chi-Square Distribution; D003376:Counseling; D005260:Female; D006040:Goals; D006301:Health Services Needs and Demand; D006801:Humans; D016015:Logistic Models; D008137:Longitudinal Studies; D008875:Middle Aged; D008960:Models, Psychological; D015404:Nursing Methodology Research; D010349:Patient Compliance / Q000523:psychology* / Q000706:statistics & numerical data; D010353:Patient Education as Topic; D016032:Randomized Controlled Trials as Topic; D020377:Self Efficacy; D012944:Social Support; D011795:Surveys and Questionnaires; D013689:Telephone; D014743:Videotape Recording; D016138:Walking / Q000193:education / Q000523:psychology*; D014930:Women / Q000193:education / Q000523:psychology*