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Week 4 Assignment

LIBNAME mydata " /courses/d1406ae5ba27fe300 " access=readonly; DATA new; SET mydata.marscrater_pds; PROC SORT; BY CRATER_ID; data   /*data managemnt for diam_circle_image*/ if DIAM_CIRCLE_IMAGE<=50 then DCI = 1 if DIAM_CIRCLE_IMAGE>50 and DIAM_CIRCLE_IMAGE<=60  then DCI = 2 if DIAM_CIRCLE_IMAGE>60 and DIAM_CIRCLE_IMAGE<=70  then DCI = 3 if DIAM_CIRCLE_IMAGE>70  then DCI = 4 /*data managemnt for DEPTH_RIMFLOOR_TOPOG*/ if DEPTH_RIMFLOOR_TOPOG<=0.5 then DRT = 1 if DEPTH_RIMFLOOR_TOPOG>0.5 and DIAM_CIRCLE_IMAGE<=1.00  then DRT = 2 if DEPTH_RIMFLOOR_TOPOG>1.00 and DIAM_CIRCLE_IMAGE<=1.50  then DRT = 3 if DEPTH_RIMFLOOR_TOPOG>1.50   then DRT = 4 run; /* frequency table*/ PROC FREQ; TABLES DCI DRT; RUN; /* univariate graph*/ PROC GCHART; VBAR DCI /Discrete type=PCT width=30; RUN; PROC GCHART; VBAR DRT /Discrete type=PCT width=30; RUN; /* bivariate graph*/ PROC GPLOT; PLOT DIAM_CIRCLE_IMAGE*DEPTH_RIMFLOOR_TOPOG ; RUN;

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Week 3 - Assignment

Program :

LIBNAME mydata " /courses/d1406ae5ba27fe300 " access=readonly;

DATA new; SET mydata.nesarc_pds;

label S4AQ1="Ever felt sad or depressed in two weeks time"

    S4AQ2="Ever felt two weeks time when didnt care about usual things"

    S4AQ4A16="Attemped suicide"

    S4AQ4A17="Thought about committing suicide"

    S4AQ4A18="Felt like wanted to die"

    S4AQ4A19="Thought alot about one's own death";

if S4AQ4A16=9 then S4AQ4A16 = .; /*code out missing data*/

if S4AQ4A17=9 then S4AQ4A17 = .; /*code out missing data*/

if S4AQ4A18=9 then S4AQ4A18 = .; /*code out missing data*/

if S4AQ4A19=9 then S4AQ4A19 = .; /*code out missing data*/

PROC SORT; BY IDNUM;

PROC FREQ; TABLES S4AQ1 S4AQ2 S4AQ4A16 S4AQ4A17 S4AQ4A18 S4AQ4A19;

RUN;

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Program:

LIBNAME mydata " /courses/d1406ae5ba27fe300 " access=readonly; DATA new; SET mydata.nesarc_pds; label S4AQ1="Ever felt sad or depressed in two weeks time"      S4AQ2="Ever felt two weeks time when didnt care about usual things"      S4AQ4A16="Attemped suicide"      S4AQ4A17="Thought about committing suicide"      S4AQ4A18="Felt like wanted to die"      S4AQ4A19="Thought alot about one's own death"; PROC SORT; BY IDNUM; PROC FREQ; TABLES S4AQ1 S4AQ2 S4AQ4A16 S4AQ4A17 S4AQ4A18 S4AQ4A19; RUN;

Output:

From the above output it can be deduced that 68.26% people did not feel sad or depressed in two weeks time whereas 29.67% felt that way. 73.37% people didn not agree with the fact that they didnt care about usual stuff. 91.59% people did not attempt suicide and 73.42% did not think about dying. 66.63% people did not feel like they wanted to die. However 73.78% people did think about one’s death. Hence from the initial impressions it can be concluded that in the intial phase, although majorly people did not attempt suicide or thought about doing it but they did have thoughts about the same which can take serious turn in the coming course of time. 

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Exploring the relationship between onset of first episode of depression and suicidal thoughts.

After analysing all the datasets, I have decided to go ahead with NESARC. Keeping in mind the current global situation, I have decided to go ahead with the topic of ‘depression’. This is a very crucial topic in today’s times; especially considering the ongoing lockdown situation and the neglect of the importance of mental health.

Further delving into the topic of depression, I would like to research on the ‘topic of suicide’. This would include the thought process of a person, suffering from depression, with respect to suicidal thoughts.

I would like to research on :

‘Relation between onset of first episode of depression and suicidal thoughts.’

The second topic that I would like to explore wrt my first topic is relation of depression with drinking or medicines(drugs)

Is there any association of onset of depression and suicidal thoughts with drinking or usage of medicines or drugs?

As per the research (Suicidality before and in the early phases of first episode psychosis Elizabeth A. Barrett a, ⁎, Kjetil Sundet b , Ann Faerden c , Ragnar Nesvåg d , Ingrid Agartz e,f , Roar Fosse g,h , Erlend Mork a,i , Nils Eiel Steen a , Ole A. Andreassen c,f , Ingrid Melle), aimed to find relation between the first episodes of depression and suicidal tendencies, there seems to be a relation between the two. The keyword in the research includes Keywords: Psychotic disorders Suicide Duration of untreated psychosis ). Most of the evidence suggests that risk of suicidal behaviour is relatively high in patients experiencing initial phases of psychosis.

As per another study, depression occurred in 80% of patients at one or initial more phases of psychosis; a combination of depression and suicidal thinking was present in 63%.

Please find the below link for research paper:   https://www.researchgate.net/profile/Roar_Fosse/publication/43181684_Suicidality_before_and_in_the_early_phases_of_first_episode_psychosis/links/5ae6c99daca272ba5081e8b4/Suicidality-before-and-in-the-early-phases-of-first-episode-psychosis.pdf

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Relation between onset of first episode of depression and suicidal thoughts.

Step 1: Choose a data set that you would like to work with

After analysing all the datasets, I have decided to go ahead with NESARC. Keeping in mind the current global situation, I have decided to go ahead with ‘major depression’. This is a very crucial topic in today’s times; especially considering the ongoing lockdown situation and the unimportance given to mental health.

 STEP 2. Identify a specific topic of interest

Further delving into the topic of depression, I would like to research on the ‘topic of suicide’. This would include the thought process of a person, suffering from depression, with respect to suicidal thoughts.

I would like to research on :

‘Relation between onset of first episode of depression and suicidal thoughts.’

 STEP 3. Prepare a codebook of your own (i.e., print individual pages or copy screen and paste into a new document) from the larger codebook that includes the questions/items/variables that measure your selected topics.)

Done (Attachment provided)

 STEP 4. Identify a second topic that you would like to explore in terms of its association with your original topic.

The second topic that I would like to explore wrt my first topic is relation of depression with drinking or medicines(drugs)

 STEP 5. Add questions/items/variables documenting this second topic to your personal codebook.

Is there any association of onset of depression and suicidal thoughts with drinking or usage of medicines or drugs?

     STEP 6. Perform a literature review to see what research has been previously done on this topic. Use sites such as Google Scholar (http://scholar.google.com) to search for published academic work in the area(s) of interest. Try to find multiple sources and take note of basic bibliographic information.

Done

 STEP 7. Based on your literature review, develop a hypothesis about what you believe the association might be between these topics. Be sure to integrate the specific variables you selected into the hypothesis.

As per the research, aimed to find relation between the first episodes of depression and suicidal tendencies, there seems to be a relation between the two. Most of the evidence suggests that risk of suicidal behaviour is relatively high in patients experiencing initial phases of psychosis.

As per another study, depression occurred in 80% of patients at one or initial more phases of psychosis; a combination of depression and suicidal thinking was present in 63%.