IV and DV are not great terms, because (as you've seen) they get you
in a tangle, when you're not sure if the IV is really independent, as
that implies causality.
Better terms are predictors and outcomes, because these are model
depending. I can have a model where I have skirt wearing as a
predictor, and gender as an outcome - I would say that if people wear
a skirt, there is a higher probability they are female. I can also
have a model where skirt wearing is an outcome and gender is a
predictor - I would say that females have a higher probability of
wearing a skirt.
There are occasions when either of these models might be useful
(guessing someone's gender; selling clothes). If I call them IVs and
DVs then by swapping them around, I feel uncomfortable on at least one
occasion (and possibly, as in your case, both).
So looking at your hypotheses.
For 1), coping is a predictor (IV). Pain is outcome.
2) I'm not sure - it's not phrased in a way that I can see a statistical test.
3) Coping is the outcome. Pain location is the predictor.
Hope that helps,
jeremy
On 27 July 2011 10:51, Sarah Azam <[log in to unmask]> wrote:
> Dear all,
>
> I have a basic enquiry that I just wanted to check is correctly understood.
>
> For my masters thesis I am looking at coping strategies (whether adaptive or
> maldaptive) in people with chronic pain with special interest in chronic
> back pain and a little confused over figuring out my IV's. My project title
> is assessment of adaptive and maladaptive coping strategies and their
> influence upon functional capacity in the management of chronic back pain.
> My hypotheses are
> 1) coping behavioural strategies will predict changes in sensorial,
> emotional and functional pain parameters.
> 2) Individual differences in coping strategies will be associated with
> differences in pain pathology, across degree (ie pain severity) and in
> duration of pain.
> 3) Differences in behavioural coping patterns will occur between chronic
> back pain and non back pain specific population ie alternative forms of
> pain.
> I am using a pain questionnaire and my design is a cross sectional survey
> collecting data at one time point only.
>
> I think My DVs are pain level, disability, emotional well being
> (stress,anxietydepression) and type of coping (active vs passive).
>
> Struggling with the IV as this is a survey not an experiment with no
> manipulation jus looking at relationships but non-causal just associations.
> Would my IV be the 2 different type of pain groups? Ie non back pain and
> back pain, the other alternative pain group in my study just acts as a
> control group to see if these people cope differently to those with back
> pain. As everyone completes the same whole questionnaire, am I dealing with
> independent groups or repeated measures? I would say it is between subjects
> but my supervisor said it could be the opposite.
>
> It's just a basic simple enquiry please
> Please help anybody I would be grateful.
>
> Thankyou for Reading
>
> Kind regards
>
> Sarah
> (MSc Researcher)
>
>
> Sent from my iPhone
>
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