The validation of the general health questionnaire (ghq-28) in a primary care setting in saudi arabia.

When the GHQ-28 scores were plotted against the CIS overall severity rating scores, the correlation coefficient was r=+0.61 and the p-value approached zero; the Spearman's Rank-difference correlation was rs=+0.57 andthe p-value approached zero which is highly significant ( figure 2 ).

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