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Bronchopulmonary dysplasia (BPD) is a chronic respiratory disease that can occur in infants. The data included in bpd.xlsx are from a study of low birth

Bronchopulmonary dysplasia (BPD) is a chronic respiratory disease that can occur in infants. The data included in bpd.xlsx are from a study of low birth weight infants in a neonatal intensive

care unit. The study was designed to examine the development of BPD by day 28 of life in a sample of 223 infants weighing less than 1750 grams. The data set has the following variables:

  • bpd = BPD (1 = yes, 0 = no)
  • bweight = birth weight (grams)
  • gestage = gestational age (weeks)
  • toxemia = mother had toxemia during pregnancy (1 = yes, 0 = no)

The bpd.xlsx data set and SAS will be used to answer the last 4 questions on this exam.

  1. Getting a feel for the data is an important first step when doing data analysis.
    1. Provide appropriate descriptive statistics and graphical displays for each of the four variables in the data set for the whole sample of 223 infants.
    2. BPD is the primary variable of interest for this study. Provide appropriate descriptive statistics for birth weight, gestational age and toxemia status for those infants with and without BPD separately.
    3. Create plots to visually compare birth weight, gestational age and toxemia status between those infants with and without BPD.
bpd bweight gestage toxemia
1 850 27 0
0 1500 33 0
1 1360 32 0
0 960.000061 35 1
0 1560 33 0
0 1120 29 0
1 810.000061 28 0
0 1620.000122 32 0
1 1000 30 0
1 700 26 0
0 1330 31 0
0 1410 31 0
1 1520 31 0
1 910.000061 29 0
0 1650 33 0
0 1460 32 0
1 1000 28 0
1 710 25 0
1 1220 28 0
1 820 28 0
0 1060 29 0
0 1240 30 0
0 1440 33 0
0 1470 32 0
0 790 29 0
1 910.000061 29 0
0 1020 29 0
0 1340 28 0
0 1140 34 0
0 1450 34 0
1 1670.000122 30 0
0 1690 33 0
0 950 31 0
1 810.000061 29 0
1 730 27 1
1 730 26 0
1 650 30 0
0 900 26 0
0 1690 32 0
0 1200 28 0
1 700 26 0
1 750 29 0
1 1000 31 0
0 1500 31 0
1 1310 31 0
1 1310 31 0
1 989.999939 29 0
1 910.000061 28 0
0 1500 33 0
1 1030 27 0
1 1000 28 0
0 1300 30 0
0 1560 32 0
0 1040 29 0
1 760 27 0
0 740 28 1
1 930 28 0
1 860.000061 28 0
1 880 30 0
1 860.000061 29 0
0 930 30 0
0 850 30 0
0 889.999939 27 0
1 1560 30 0
1 1560 32 0
0 880 31 1
0 1629.999878 32 0
0 1550 32 0
0 1130 30 0
0 1180 30 0
0 935.999939 27 1
0 1360 30 0
0 1000 27 0
0 1170 29 0
0 1160 30 0
0 1570 33 0
0 1540 33 0
0 889.999939 28 0
0 1030 30 0
1 1200 30 0
1 650 26 0
0 1729.999878 34 0
0 1370 33 0
0 1670.000122 36 0
0 1530 34 0
1 1600 33 1
1 650 28 0
0 1530 33 0
0 1600 36 0
0 1510 33 0
0 1260 31 0
0 1320 31 0
0 1330 32 0
0 1720.000122 32 0
0 1500 30 0
1 570 27 0
0 870 29 0
0 1320 30 0
1 1420 30 0
1 860.000061 27 0
0 1500 31 0
0 1610 34 0
1 1600 33 0
0 1310 29 0
1 1580 30 0
1 1060 29 0
1 889.999939 26 0
1 870 30 0
0 820 29 1
0 1700 32 0
1 800 26 0
1 1020 28 0
0 1180 31 1
1 700 25 1
0 790 29 0
1 850 27 0
0 1400 32 0
0 1280 32 0
0 1190 32 1
1 880 28 0
1 930 30 0
0 1040 33 0
0 1030 32 0
0 1350 33 1
1 1030 26 0
1 550 25 1
0 1070 33 0
0 1490 30 0
0 1000 29 0
0 1530 31 0
1 760 26 0
0 1470 33 0
1 989.999939 29 0
1 860.000061 30 0
1 870 29 0
1 1050 29 1
1 1040 28 0
0 1400 29 1
0 730 31 0
0 1240 34 0
0 1000 29 0
0 1660 31 0
1 1060 30 0
0 1050 28 0
0 1520 31 1
1 820 26 0
0 1380 32 1
0 1250 32 0
0 1020 32 1
0 1200 30 0
0 1260 30 0
0 1120 30 0
1 1350 31 0
0 1330 30 0
0 1340 30 1
0 1590 30 1
0 1370 33 0
0 1650 33 0
0 1550 33 1
1 770 26 0
1 870 28 0
0 1120 31 1
1 820 26 0
1 450 28 1
0 520 28 1
1 850 30 0
0 1230 32 1
0 1520 33 0
0 1370 32 0
0 1430 30 0
0 980 29 0
0 1090 28 0
0 1720.000122 32 0
0 1350 28 0
1 910.000061 29 0
1 860.000061 28 0
0 1720.000122 30 0
1 750 27 0
0 740 27 0
1 900 29 0
0 820 28 0
0 960.000061 29 0
0 1020 33 0
0 1150 32 0
0 1040 29 1
0 1280 32 0
0 1090 29 0
0 1110 28 0
0 1430 29 0
0 1600 34 0
0 1629.999878 32 0
0 1670.000122 31 1
1 839.999939 30 0
0 1420 32 0
0 1560 37 0
0 1500 29 0
0 1020 28 0
0 1650 32 0
0 1180 32 0
0 1100 28 0
0 1410 30 0
0 1720.000122 34 0
0 1070 30 0
0 1200 29 0
0 1679.999878 30 0
1 845 26 0
0 1340 29 0
0 800 34 0
0 970 31 1
0 950 31 0
0 1560 36 0
1 839.999939 31 0
0 1400 30 0
1 665 27 0
0 1600 31 0
0 1679.999878 32 0
0 1640 31 1
0 1120 28 1
1 700 27 0
0 1380 33 0
0 989.999939 30 0
0 1220 29 0
0 1480 32 0

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