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Table 1 Mean sample size, effect size (ES), absolute effect size, and IF, by categories of funding and reported COIs

From: The effect of journal impact factor, reporting conflicts, and reporting funding sources, on standardized effect sizes in back pain trials: a systematic review and meta-regression

  

N (%)

Sample size (SD)

ES (mean)

abES (mean)

IF (mean)

COI

      
 

None reported

70 (71)

149.9 (247.0)

0.389

0.67

3.144

 

Reported none

22 (22)

126.5 (177.1)

0.291

0.78

3.458

 

Reported some

7 (7)

214.6 (125.1)

0.409

0.41

6.001

Funding

      
 

None reported

35 (35)

61.8 (31.5)

0.324

0.53

2.004

 

Reported none

11 (11)

87.8 (42.4)

0.499

1.43 ∗∗∗

2.155

 

Reported some

53 (54)

219.9 (277.6) ∗∗∗

0.371

0.62

4.102 ∗

  1. ∗P<0.05 (compared to none reported)
  2. ∗∗∗P=0.001 (compared to none reported)