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Table 1 Correlation of Psychotic Experiences and Depression for level of outcome across five levels (n = 47,004)

From: Testing extra-linearity across a psychosis continuum

 

PEs level1

N = 13,978 (29·7%)

PEs level2

N = 23,567 (50·1%)

PEs level3

N = 6402 (13·6%)

PEs level4

N = 2118 (4·5%)

PEs level5

N = 939 (2·0%)

 

Mean (SD)

β

Mean (SD)

β (95%CI)

Mean (SD)

β (95%CI)

Mean (SD)

β (95%CI)

Mean (SD)

β (95%CI)

Psychotic Experiences (SCL90-R)

4·44 (SD 5·95)

0 (0)

0·00 (Ref)

3·29 (1·92)

3·29***$

(3·25–3·33)

10·31 (1·94)

10·31***$

(10·25–10·37)

17·55 (2·15)

17·55***$

(17·46–17·64)

29·75 (7·26)

29·75***$

(29·62–29·87)

Depressive Symptoms (PHQ 9)

3·00 (SD 3·42)

0·92 (1·83)

0·00 (Ref)

2·97 (2·52)

1·88***$

(1·82–1·93)

5·52 (3·42)

4·61***$

(4·53–4·69)

7·77 (4·23)

6·86***$

(6·73–6·98)

11·11 (5·66)

10·19***$

(10·01–10·37)

Rho (95%CI)a

 

–

 

0·35**@ (0·34, 0·36)

 

0·20*@

(0·18, 0·23)

 

0·10*

(0·06, 0·15)

 

0·25*

(0·19, 0·31)

  1. aSpearman correlation was performed, where rho is the correlation coefficient and CI is the confidence interval
  2. *p < 0·05, **p < 0·01, ***p < 0·001
  3. $: significance after correction for regressions of 21 variables using Bonferroni’s correction and the new threshold is 0.05/21 = 0.0024
  4. @: significance after correction for 4 correlations using Bonferroni’s correction and the new threshold is 0.05/21 = 0.0125