------------------------------------------------------------------------------------ log: \\Cronus\www\teaching\postreg\ExamF2007log_codebook.txt log type: text opened on: 13 Jun 2008, 08:56:28 file ExamF2007log.dta saved ------------------------------------------------------------------------------------ age age of the mother in years ------------------------------------------------------------------------------------ type: numeric (byte) range: [15,47] units: 1 unique values: 33 missing .: 0/15000 mean: 28.9764 std. dev: 4.726 percentiles: 10% 25% 50% 75% 90% 23 26 29 32 35 ------------------------------------------------------------------------------------ parity Parity ------------------------------------------------------------------------------------ type: numeric (byte) label: parity range: [1,3] units: 1 unique values: 3 missing .: 0/15000 tabulation: Freq. Numeric Label 6327 1 first birth 5525 2 second birth 3148 3 third or more ------------------------------------------------------------------------------------ preterm the delivery before 260 days of gestation ------------------------------------------------------------------------------------ type: numeric (byte) label: yesno range: [0,1] units: 1 unique values: 2 missing .: 0/15000 tabulation: Freq. Numeric Label 14199 0 No 801 1 Yes ------------------------------------------------------------------------------------ smoking smoking during pregnancy ------------------------------------------------------------------------------------ type: numeric (float) label: yesno range: [0,1] units: 1 unique values: 2 missing .: 0/15000 tabulation: Freq. Numeric Label 11064 0 No 3936 1 Yes ------------------------------------------------------------------------------------ id (unlabeled) ------------------------------------------------------------------------------------ type: numeric (float) range: [1,15000] units: 1 unique values: 15000 missing .: 0/15000 mean: 7500.5 std. dev: 4330.27 percentiles: 10% 25% 50% 75% 90% 1500.5 3750.5 7500.5 11250.5 13500.5 log: \\Cronus\www\teaching\postreg\ExamF2007log_codebook.txt log type: text closed on: 13 Jun 2008, 08:56:28 ------------------------------------------------------------------------------------