ReadMe file for the meta-analysis of attentional bias to somaotosensory stimuli in chronic pain patients
There are 13 csv files which include the data from the meta-analysis and risk of bias analysis.

File descriptions:

1 somatosensory modality ab chronic pain vs healthy.csv = data for attentional bias to somatosensory modality stimuli over other modalities

1a painful stimuli.csv = data for attentional bias to painful somatosensory modality stimuli over other modalities

1b non-painful stimuli.csv = data for attentional bias to non-painful somatosensory modality stimuli over other modalities

1c attentional interference.csv = data for attentional bias to somatosensory modality stimuli over other modalities from the primary task paradigm

1d distraction efficacy.csv = data for attentional bias to somatosensory modality stimuli over other modalities from the common task paradigm

2 spatial ab affected vs unaffected.csv = data for spatial attentional bias to somatosensory stimuli on the pain-affected side as compared to the pain-free side

3 spatial ab chronic pain vs healthy.csv = data for spatial attentional bias to somatosensory stimuli compared between chronic pain and healthy people

4 visual ab affected vs unaffected.csv =  data for spatial attentional bias to visual stimuli compared between chronic pain and healthy people

between-group modality.csv = data from all between-group modality studies for publication bias analysis

between-group spatial.csv = data from all between-group spatial studies for publication bias analysis

within-group studies.csv = data from all within-group spatial studies for publication bias analysis

risk of bias date ordered.csv = risk of bias ratings in chronological order

rob_ratings.csv = agreement of risk of bias ratings between the two independent raters


Relationships between files:

Data is in the input folder, R scripts are in the R folder and plots generated are sent to the graphics folder. 


Definitions of variable names
meta-analysis data:
label = short name of the study the data refers to
m1i = chronic pain mean for between-group data/pain affected side mean for within-group data
sd1i = chronic pain standard deviation for between-group data/pain affected side standard deviation for within-group data
m2i = healthy mean for between-group data/pain unaffected side mean for within-group data
sd2i = healthy standard deviation for between-group data/pain unaffected side standard deviation for within-group data
n1i = sample size of chronic pain group for between-group data/overall sample size for within-group data
n2i = sample size of healthy group for between-group data/overall sample size for within-group data
stimuli_location = bodily location to which stimuli were presented
stimuli_type = type of stimulus 
stimuli_pain = yes/no variable indicating whether the stimuli were painful
paradigm = the task/paradigm used to assess attentional bias
age_mean = mean age of the participants
percent_female = percentage of the participants who were female
condition = chronic pain condition of the participants
pain_duration = mean pain duration of the participants in months
pain_intensity = mean rating of pain intensity scaled from 0-10

risk of bias data:
author = short name of the study the data refers to
replicable_sampling_method = could the sampling method be replicated (low, high, or unclear risk of bias)
recognised_diagnosis_criteria = were recognised diagnosis criteria used for participant recruitment (low, high, or unclear risk of bias)
matched_controls = were healthy controls matched with the chronic pain patients in age and gender (low, high, or unclear risk of bias)
researcher_blinded = was the researcher who analysed the data unaware of whether each participant was in the healthy or chronic pain group (low, high, or unclear risk of bias)
replicable_method = could the method be replicated (low, high, or unclear risk of bias)
paradigm_validated = had the task been previously validated for use with this population (low, high, or unclear risk of bias)
power_calc = was an a priori power calculation conducted to determine sample size (low, high, or unclear risk of bias)
missing_data_dealt_with = was the strategy for missing data determined a priori/there was no missing data (low, high, or unclear risk of bias)
all_outcomes_reported = were all outcomes included in the methods section reported in the results (low, high, or unclear risk of bias)

PB = risk of bias ratings from one researcher
DS = risk of bias ratings from another independent researcher
Final = the rating agreed upon by both researchers

Definitions of row names:
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Peters et al. (2002) =  Peters ML, Vlaeyen JWS, Kunnen AMW. Is pain-related fear a predictor of somatosensory hypervigilance in chronic low back pain patients? Behaviour Research and Therapy 2002;40(1):85-103.
De Tommaso et al. (2003) =  De Tommaso M, Valeriani M, Guido M, Libro G, Specchio LM, Tonali P, Puca F. Abnormal brain processing of cutaneous pain in patients with chronic migraine. Pain 2003;101(1-2):25-32.
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Zohsel et al. (2008) = Zohsel K, Hohmeister J, Flor H, Hermann C. Altered pain processing in children with migraine: An evoked potential study. European Journal of Pain 2008;12(8):1090-1101.
Hermann et al. (2008) = Hermann C, Zohsel K, Hohmeister J, Flor H. Cortical correlates of an attentional bias to painful and innocuous somatic stimuli in children with recurrent abdominal pain. Pain 2008;136(3):397-406.
De Tommaso et al. (2008) = De Tommaso M, Baumgartner U, Sardaro M, Difruscolo O, Serpino C, Treede RD. Effects of distraction versus spatial discrimination on laser‐evoked potentials in migraine. Headache: The Journal of Head and Face Pain 2008;48(3):408-416.
Moseley et al. (2009) = Moseley GL, Gallace A, Spence C. Space-based, but not arm-based, shift in tactile processing in complex regional pain syndrome and its relationship to cooling of the affected limb. Brain 2009;132:3142-3151.
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Kolb et al. (2012) = Kolb L, Lang C, Seifert F, Maihöfner C. Cognitive correlates of “neglect-like syndrome” in patients with complex regional pain syndrome. PAIN® 2012;153(5):1063-1073.
Moseley et al. (2012a) =  Moseley GL, Gallace A, Iannetti GD. Spatially defined modulation of skin temperature and hand ownership of both hands in patients with unilateral complex regional pain syndrome. Brain 2012;135(12):3676-3686.
Moseley et al. (2012b) =  Moseley GL, Gallagher L, Gallace A. Neglect-like tactile dysfunction in chronic back pain. Neurology 2012;79(4):327-332.
Tiemann et al. (2012) = Tiemann L, Schulz E, Winkelmann A, Ronel J, Henningsen P, Ploner M. Behavioral and neuronal investigations of hypervigilance in patients with fibromyalgia syndrome. PloS one 2012;7(4):e35068.
Iacovelli et al. (2012) = Iacovelli E, Tarantino S, De Ranieri C, Vollono C, Galli F, De Luca M, Capuano A, Porro A, Balestri M, Guidetti V. Psychophysiological mechanisms underlying spatial attention in children with primary headache. Brain and Development 2012;34(8):640-647.
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Van Damme et al. (2015) = Van Damme S, Van Hulle L, Spence C, Devulder J, Brusselmans G, Crombez G. Hypervigilance for innocuous tactile stimuli in patients with fibromyalgia: An experimental approach. European Journal of Pain 2015;19(5):706-714.
Filippopulos et al. (2015) = Filippopulos FM, Grafenstein J, Straube A, Eggert T. Complex regional pain syndrome (CRPS) or continuous unilateral distal experimental pain stimulation in healthy subjects does not bias visual attention towards one hemifield. Experimental brain research 2015;233(11):3291-3299.
Mathur et al. (2015) = Mathur VA, Khan SA, Keaser ML, Hubbard CS, Goyal M, Seminowicz DA. Altered cognition-related brain activity and interactions with acute pain in migraine. NeuroImage: Clinical 2015;7:347-358.
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