topic Re: In sas, how to check the reported lab results are within min and max values in New SAS User

In sas, how to check the reported lab results are within min and max values

Sri_devi — Mon, 05 Sep 2022 23:26:31 GMT

Hello Team,

I need help in how to check the reported lab results values are within the Min & max values data as in below table :

i want to check Value recorded is within the min range & max range provided.

Thank you!

Min Range	Max Range	Unit	Value
			Nil
			Nil
			Nil
			Nil
			Nil
1	1.035		1.007
			Nil
4.6	9.0		6.0
			Nil
			Nil
	<5.0	umol/L	4.0
	<25	umol/L	11
		umol/L	7
	<201	U/L	145
35	50	g/L	43
30	120	U/L	50
	<51	U/L	31
9	19	mmol/L	11
	<41	U/L	18
22	32	mmol/L	28
2.10	2.60	mmol/L	2.42
2.10	2.60	mmol/L	2.46
95	110	mmol/L	104
	<5.6	mmol/L	4.9
60	110	umol/L	90
>59		mL/min/1.73m2	> 90
	<51	U/L	36
23	39	g/L	29
3.0	6.9	mmol/L	4.2
1.07	1.27	mmol/L	1.25
50	280	U/L	199
0.75	1.50	mmol/L	1.05
3.5	5.2	mmol/L	3.8
60	82	g/L	72
135	145	mmol/L	139
3.5	8.0	mmol/L	7.1
0.18	0.47	mmol/L	0.36
35	50	g/L	43
22	32	mmol/L	28
2.10	2.60	mmol/L	2.42
2.10	2.60	mmol/L	2.46
95	110	mmol/L	104
3.5	5.2	mmol/L	3.8
60	82	g/L	72
135	145	mmol/L	139
23.0	35.0	s	25.9
0.9	1.2		1.1
9.5	13.0	s	11.2
	<0.3	x10{S9}/L	< 0.1
		%	1
	<0.7	x10{S9}/L	< 0.1
		%	2
0.40	0.55		0.39
125	175	g/L	132
1.0	4.0	x10{S9}/L	1.3
		%	32
27.0	34.0	pg	29.6
80	99	fL	88
310	360	g/L	336
	<1.1	x10{S9}/L	0.3
		%	8
		fL	10.6
2.0	8.0	x10{S9}/L	2.3
		%	57
150	450	x10{S9}/L	198
4.50	6.50	x10{S12}/L	4.46
11.0	15.0	%	13.0
0.20	2.00	%	1.64
10	100	x10{S9}/L	73
4.0	11.0	x10{S9}/L	4.1
			Not Detected
			Not Detected
			Not Detected
			0
			0
			0
			Non Reactive
			Negative
		S/CO	< 0.02
		IU/L	< 0.10
			Not Detected
	<20.01	mIU/ml	0.12
	<5.0	umol/L	3.6
	<25	umol/L	10
		umol/L	6
	<201	U/L	152
35	50	g/L	47
30	120	U/L	55
	<51	U/L	56
9	19	mmol/L	11
	<41	U/L	29
22	32	mmol/L	27
2.10	2.60	mmol/L	2.44
2.10	2.60	mmol/L	2.54
95	110	mmol/L	104
	<5.6	mmol/L	5.4
60	110	umol/L	89
>59		mL/min/1.73m2	> 90
	<51	U/L	44
23	39	g/L	30
3.0	6.9	mmol/L	4.5
1.07	1.27	mmol/L	1.25
50	280	U/L	216
0.75	1.50	mmol/L	1.10
3.5	5.2	mmol/L	4.4
60	82	g/L	77
135	145	mmol/L	138
3.5	8.0	mmol/L	7.6
0.18	0.47	mmol/L	0.41
35	50	g/L	47
22	32	mmol/L	27
2.10	2.60	mmol/L	2.44
2.10	2.60	mmol/L	2.54
95	110	mmol/L	104
3.5	5.2	mmol/L	4.4
60	82	g/L	77
135	145	mmol/L	138
23.0	35.0	s	27.1
0.9	1.2		1.0
9.5	13.0	s	10.9
	<0.3	x10{S9}/L	< 0.1
		%	1
	<0.7	x10{S9}/L	0.1
		%	3

Re: In sas, how to check the reported lab results are within min and max values

Tom — Tue, 06 Sep 2022 01:31:57 GMT

Before you can write code you need to have a RULE. What is the RULE? Remember that MIN, MAX and VALUE all appear to be character variables, so the rule has to include how to convert them into numbers so that they can be compare.

Also what the heck do you do with the observations that have nothing for either MIN or MAX?

Re: In sas, how to check the reported lab results are within min and max values

Sri_devi — Tue, 06 Sep 2022 04:06:50 GMT

For data values with blank Max and Min can be ignored.
Rule in converting character to numeric. DO you mean to write a code to convert those. Can you please provide details on how to do it please.

thanks!

Re: In sas, how to check the reported lab results are within min and max values

ballardw — Tue, 06 Sep 2022 06:27:06 GMT

Compare exactly what?

When you have that many different values in a single column called "max range" then it is pretty obvious that these values are not all compared to the same measurements because you have stuff like <5 and <25 with the same apparent unit of measure. So if "5" is a max then "25: would be way past maximum.

And <5 would mean you have to provide the actual value you want for YOUR process.

Personally I find this to be a next a useless question. You don't provide how any of this is to be used, no "reported lab results" to compare, are apparently using many different types of measurements.

I have worked with instrument data for comparisons. So a specific instrument, or group of instruments, would be compared to a given numeric range. You "data" would have to include the instrument to be even partially useful. If the recorded measurements are numeric then you must provide a numeric value. <5 is not numeric. So somewhere you also need a place that says the value is compared to this number and either report a problem when the value exceeds/ is below some range or indicate it is acceptable. You haven't provided any actual use case.

Note that is this were structured correctly, such as indicating the type of instrument or measurement then you would have to be applying the min and max only to those types of measures. But there is no such indication.

Re: In sas, how to check the reported lab results are within min and max values

Ksharp — Tue, 06 Sep 2022 11:58:21 GMT

You didn't post the output you want yet !

Here could you a start.

data have;
infile datalines expandtabs truncover;
input (Min  Max  Unit  Value) (:$40.);
new_min=input(compress(min,'.','kd'),best32.);
new_max=input(compress(max,'.','kd'),best32.);
new_value=input(compress(value,'.','kd'),best32.);

if missing(new_min) and not missing(new_max) then new_min=.;
if not missing(new_min) and  missing(new_max) then new_max=constant('bigint');

if new_min<new_value<new_max then flag=1;
drop new_min new_max new_value;
datalines;
.   .  . Nil
.   .  . Nil
1 1.035  . 1.007
.  <5.0 umol/L 4.0
.  <25 umol/L 11
>59  . mL/min/1.73m2 >90
.  <0.3 x10{S9}/L <0.1
;

Re: In sas, how to check the reported lab results are within min and max values

Tom — Tue, 06 Sep 2022 12:50:46 GMT

@Sri_devi wrote:
For data values with blank Max and Min can be ignored.
Rule in converting character to numeric. DO you mean to write a code to convert those. Can you please provide details on how to do it please.

thanks!

No. You need to explain how you want the code to work. Then we can help you with the code. Since some of the values of MAX are not numbers you need to explain what number you want them converted into. And what the meaning of the extra characters that make them not actual numbers means. For example what is the difference in meaning between MAX='<5' and MAX='5' ? What does it mean in MAX is populated and MIN is not? What do you want to do with those non numeric values of VALUE?