Pregnancy among the unmarried in New Zealand.
D000300:Adoption; D003267:Contraception; D005260:Female; D006801:Humans; D007086:Illegitimacy; D008393:Marriage; D009520:New Zealand; D011247:Pregnancy; D011315:Preventive Medicine; D011446:Prospective Studies; D044469:Racial Groups; D012723:Sex; D012922:Social Change; D013997:Time Factors