Conception and design: Craig, Reed. Acquisition of data: Craig, Owens. Analysis and interpretation of data: Craig. Drafting the article: all authors. Critically revising the article: all authors. Reviewed submitted version of manuscript: all authors. Approved the final version of the manuscript on behalf of all authors: Craig. Statistical analysis: Craig. Administrative/technical/material support: Owens. Study supervision: Craig, Reed.
National Survey of Family Growth: NSFG 2006–08 Female Questionnaire, Female G CRQ, Year 1. Female Section G CAPI Reference Questionnaire (CRQ): Birth Desires and Intentions. Centers for Disease Control and Prevention (http://www.cdc.gov/nchs/data/nsfg/NSFG_2006-2010_Y1_FemaleG_CRQ.pdf) [Accessed November 5 2014]