ON 7/7/7 is first choice for 60% of CTU survey respondents.
D000569:Americas; D001519:Behavior; D001695:Biology; D003132:Commerce; D003150:Community Health Workers; D003267:Contraception; D003268:Contraception Behavior; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D003365:Costs and Cost Analysis; D003657:Decision Making; D003695:Delivery of Health Care; D019049:Developed Countries; D003906:Developing Countries; D004467:Economics; D004703:Endocrine System; D005193:Family Planning Services; D006262:Health; D006282:Health Personnel; D006285:Health Planning; D006728:Hormones; D016912:Levonorgestrel; D008389:Marketing of Health Services; D009640:Norethindrone; D009656:North America; D010820:Physicians; D010827:Physiology; D014481:United States
D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D006728:Hormones; D016912:Levonorgestrel; D009640:Norethindrone
Americas; Behavior; Biology; Commerce; Contraception; Contraceptive Agents; Contraceptive Agents, Female; Contraceptive Agents, Progestin; Contraceptive Methods; Contraceptive Methods Chosen; Contraceptive Usage; Decision Making; Delivery Of Health Care; Developed Countries; Developing Countries; Economic Factors; Endocrine System; Family Planning; Family Planning Personnel; Family Planning Programs; Health; Health Personnel; Hormones; Levonorgestrel; Macroeconomic Factors; Marketing; Norethindrone; North America; Northern America; Oral Contraceptives; Oral Contraceptives, Combined; Oral Contraceptives, Phasic; Physicians; Physiology; Pricing; United States