Hi, Can someone explain why it says the cases are complete. It seems they
are not.
head(x)
rnum Exam.Title Patient.ID Age Sex Impression2
1 1 Temporal bone 3529243 009Y M
2 2 Temporal bone 3529243 010Y M
3 3 Head 3508570 002M M
4 4 Sacrum 3494713 004D F
5 5 Head 3471128 015M F
6 6 Head 3494480 022M M
Impression3 AgeByYear Exposure Reason Result
1 9 H
2 10 H
3 0 H premature Negative
4 0 P
5 1 H seizure negative
6 1 H head trauma Negative
Repeat Result.1
1 h P
2 r1 P
3 N
4 P
5 N
6 h N
> complete.cases(x[1:5,])
[1] TRUE TRUE TRUE TRUE TRUE
> class(x)
[1] "data.frame"
> str(x)
'data.frame': 978 obs. of 13 variables:
$ rnum : int 1 2 3 4 5 6 7 8 9 10 ...
$ Exam.Title : Factor w/ 75 levels "Abdomen","Abdomen (Post CE)",..: 74 74
21 68 21 21 21 21 2 3 ...
$ Patient.ID : int 3529243 3529243 3508570 3494713 3471128 3494480
3494480 3553704 3295006 3295006 ...
$ Age : Factor w/ 53 levels "000Y","001D",..: 30 33 4 11 43 51 51
40 33 33 ...
$ Sex : Factor w/ 2 levels "F","M": 2 2 2 1 1 2 2 2 1 1 ...
$ Impression2: Factor w/ 114 levels "","????","?????",..: 1 1 1 1 1 1 1 1
1 57 ...
$ Impression3: Factor w/ 22 levels "","??","??????",..: 1 1 1 1 1 1 1 1 1
13 ...
$ AgeByYear : int 9 10 0 0 1 1 1 13 10 10 ...
$ Exposure : Factor w/ 27 levels "A","A 2","A P",..: 11 11 11 27 11 11
11 11 1 2 ...
$ Reason : Factor w/ 112 levels "","abnormal behavior, check",..: 1 1
80 1 87 36 36 36 1 1 ...
$ Result : Factor w/ 7 levels "","Inconclusive",..: 1 1 4 1 3 4 4 4 1
1 ...
$ Repeat : Factor w/ 13 levels "","h","r1","r10",..: 2 3 1 1 1 2 3 1 2
6 ...
$ Result.1 : Factor w/ 2 levels "N","P": 2 2 1 2 1 1 1 1 2 2 ...
> mode(x)
[1] "list"
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