Influence factors
|
Estimated β (95% CI)
|
---|
WLSLR
|
P-value
|
GEE
|
P-value
|
---|
No. of authors
|
≤ 4
|
Reference
| |
Reference
| |
5 ~ 6
|
−0.28 (−0.57, 0.00)
|
0.054
|
−0.36 (− 0.65, − 0.06)
|
0.017
|
7~ 8
|
− 0.11 (− 0.40, 0.18)
|
0.450
|
− 0.13 (− 0.40, 0.14)
|
0.350
|
> 8
|
− 0.03 (− 0.39, 0.33)
|
0.890
|
−0.12 (− 0.49, 0.25)
|
0.516
|
Year of publication
|
2011
|
Reference
| |
Reference
| |
2012
|
−0.30 (−0.76, 0.17)
|
0.211
|
−0.38 (− 0.84, 0.08)
|
0.105
|
2013
|
−0.55 (−1.10, 0.00)
|
0.048
|
− 0.58 (−1.10, − 0.06)
|
0.028
|
2014
|
−0.12 (−.061, 0.36)
|
0.616
|
− 0.14 (− 0.59, 0.31)
|
0.546
|
2015
|
− 0.37 (− 0.89, 0.15)
|
0.166
|
−0.39 (− 0.85, 0.07)
|
0.100
|
2016
|
−0.45 (− 0.97, 0.06)
|
0.084
|
−0.49 (− 0.96, − 0.02)
|
0.041
|
2017
|
−0.93 (− 1.40, − 0.47)
|
< 0.001
|
−0.97 (− 1.43, − 0.51)
|
< 0.001
|
Region
|
European
|
Reference
| |
Reference
| |
Asia Pacific
|
−0.08 (− 0.37, 0.22)
|
0.612
|
− 0.11 (− 0.38, 0.16)
|
0.412
|
America
|
− 0.07 (− 0.61, 0.46)
|
0.785
|
−0.03 (− 0.59, 0.53)
|
0.917
|
Funding
|
No
|
Reference
| |
Reference
| |
Yes
|
−0.20 (−0.43, 0.02)
|
0.077
|
−0.30 (− 0.47, − 0.05)
|
0.015
|
Word count
|
≤ 250
|
Reference
| |
Reference
| |
> 250
|
0.31 (0.02, 0.61)
|
0.039
|
0.28 (0.03, 0.54)
|
0.027
|
- WLSLR weighted least square linear regression;
- GEE generalized estimating equation