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Cotinine

Sample of (N=1513) expectant mothers

Reference:

Maternal cotinine level during pregnancy and birthweight for gestational age. Peacock JL, Cook DG, Carey IM, Jarvis MJ, Bryant AE, Anderson HR, Bland JM. Int J Epidemiol. 1998 Aug; 27(4): 647-56.

Description:

Nausea, caffeine and cotinine measurements in early and late pregnancy

Data dictionary:

Each row contains the following 11 variables for each person.

Name	Interpretation	Data type	Permitted Values
nausea1	Nausea during booking interview	Numeric
nausea2	Nausea 36 weeks	Numeric
caf1	Caffeine measurement at booking	Numeric
caf3	Caffeine measurement at 36 weeks	Numeric
cotearly	Cotinine in early pregnancy in smokers	Numeric
cotlate	Cotinine in late pregnancy in smokers	Numeric
cafdiff	Change in blood caffeine	Numeric
lcafearly	Log caffeine early pregnancy	Numeric
lcaflate	Log caffeine late pregnancy	Numeric
logcafdiff	Change in log caffeine	Numeric
cotdiff	Change in blood cotinine in smokers	Numeric