找到每个观察的斜率

Question

我是SAS的新手。我有一组数据，其中包含3组肺功能测量，每个观察下面给出3个相应的日期。我想使用SAS软件为每次观察提取斜率（肺功能下降），并在每个观察的新栏中插入 1.我该如何处理这个问题？
2.我的数据集是否以正确的格式排列？

s11 = "A - Sidnei"
s12 = "B - Parizi"
s13 = "C - Berlini"
s14 = "D - Varshava"
daxmareba = "1 - 50/50 +"
while True:

    print "======================MENU======================"
    print "1 - Axali tamashis dawyeba:"
    print "2 - Wesebi"
    print "3 - Tamashis avtori"

    menu = raw_input ("< ")
    if menu == "3":
        print "======================Avtori======================"
        print ""
        print ""
        print "Tamashis avtoria - Sandro Stashevski"
    elif menu == "2":
        print "======================Wesebi======================"
        print ""
        print ""
        print "Tamasshi aris 10 shekitxva. Tito shekitxvaze 4 savaraudo pasuxi."
        print "Tqven agretve gaqvt 1 daxmareba: 50/50."

    elif menu == "1":
        print "Shekitxva 1/10"
        print ""
        print "Ra hqvia Germaniis dedaqalaqs"
        print s11,
        print s12,
        print s13,
        print s14,
        print ""
        print daxmareba,

第1次观察的例子，斜率= 0.0003 感谢..