Table 4.

Meta-regression analyses of potential sources and difference in complication for stemless and stemmed implants.

Variable	Coefficient	Standard error	P value	95% confidence interval
Complication (Stemless)
Number of patients (≤20 or ≥20)	−0.159	0.081	.186	−0.507 to 0.187
Age, mean, year (≤70 or ≥70)	0.083	0.091	.462	−0.313 to 0.478
Average follow-up (≤5years or ≥5years)	0.095	0.133	.547	−0.475 to 0.665
Complication (Stemmed)
Number of patients (≤20 or ≥20)	0.000	0.059	.995	−0.254 to 0.255
Age, mean, year (≤70 or ≥70)	0.081	0.065	.341	−0.200 to 0.361
Average follow-up (≤5years or ≥5years)	-0.043	0.064	.567	−0.315 to 0.229