lowbwt: LOWBWT data

In aplore3: Datasets from Hosmer, Lemeshow and Sturdivant, "Applied Logistic Regression" (3rd Ed., 2013)

Description

lowbwt dataset.

Usage

lowbwt

Format

A data.frame with 189 rows and 11 variables:

id

Identification Code

low

Low birth weight (1: >= 2500, 2: < 2500 g)

age

Age of mother (Years)

lwt

Weight of mother at last menstrual period (Pounds)

race

Race (1: White, 2: Black, 3: Other)

smoke

Smoking status during pregnancy (1: No, 2: Yes)

ptl

History of premature labor (1: None, 2: One, 3: Two, etc)

ht

History of hypertension (1: No, 2: Yes)

ui

Presence of Uterine irritability (1: No, 2: Yes)

ftv

Number of physician visits during the first trimester (1: None, 2: One, 3: Two, etc)

bwt

Recorded birth weight (Grams)

Source

Hosmer, D.W., Lemeshow, S. and Sturdivant, R.X. (2013) Applied Logistic Regression, 3rd ed., New York: Wiley

Examples

head(lowbwt, n = 10)
summary(lowbwt)

Example output

   id      low age lwt  race smoke  ptl  ht  ui       ftv  bwt
1   4 < 2500 g  28 120 Other   Yes  One  No Yes      None  709
2  10 < 2500 g  29 130 White    No None  No Yes Two, etc. 1021
3  11 < 2500 g  34 187 Black   Yes None Yes  No      None 1135
4  13 < 2500 g  25 105 Other    No  One Yes  No      None 1330
5  15 < 2500 g  25  85 Other    No None  No Yes      None 1474
6  16 < 2500 g  27 150 Other    No None  No  No      None 1588
7  17 < 2500 g  23  97 Other    No None  No Yes       One 1588
8  18 < 2500 g  24 128 Black    No  One  No  No       One 1701
9  19 < 2500 g  24 132 Other    No None Yes  No      None 1729
10 20 < 2500 g  21 165 White   Yes None Yes  No       One 1790
       id               low           age             lwt           race   
 Min.   :  4.0   >= 2500 g:130   Min.   :14.00   Min.   : 80.0   White:96  
 1st Qu.: 68.0   < 2500 g : 59   1st Qu.:19.00   1st Qu.:110.0   Black:26  
 Median :123.0                   Median :23.00   Median :121.0   Other:67  
 Mean   :121.1                   Mean   :23.24   Mean   :129.8             
 3rd Qu.:176.0                   3rd Qu.:26.00   3rd Qu.:140.0             
 Max.   :226.0                   Max.   :45.00   Max.   :250.0             
 smoke            ptl        ht        ui             ftv           bwt      
 No :115   None     :159   No :177   No :161   None     :100   Min.   : 709  
 Yes: 74   One      : 24   Yes: 12   Yes: 28   One      : 47   1st Qu.:2414  
           Two, etc.:  6                       Two, etc.: 42   Median :2977  
                                                               Mean   :2945  
                                                               3rd Qu.:3475  
                                                               Max.   :4990  

aplore3 documentation built on May 2, 2019, 8:24 a.m.