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Table 2 Univariate and multivariate Cox regression models for risk factors that could have influenced the survival rate of primary molar pulpectomy

From: Survival analysis of pulpectomy in primary molars performed under dental general anaesthesia: a two-year retrospective study

Variable

Univariate

Multivariate

HR (95%CI)

P

HR (95%CI)

P

Age

1.01 (1.00–1.03)

0.159

1.00 (0.98–1.02)

0.719

dmft

1.00 (0.95–1.05)

0.935

0.98 (0.93–1.03)

0.442

Gender

 

0.749

 

0.614

Male

1(Indicator)

 

1(Indicator)

 

Female

0.95 (0.68–1.32)

 

1.09 (0.77–1.54)

 

Endodontic diagnosis

 

 < 0.001

 

 < 0.001

Irreversible pulpitis

1(Indicator)

 

1(Indicator)

 

Periapical periodontitis

3.28 (2.34–4.60)

 

2.76 (1.92–3.99)

 

Tooth location

 

0.030

 

0.047

Maxillary primary molar

1(Indicator)

 

1(Indicator)

 

Mandibular primary molar

1.52 (1.04–2.21)

 

1.47 (1.00–2.16)

 

Postobturation sealing materidal

 

 < 0.001

 

0.001

MTA

1(Indicator)

 

1(Indicator)

 

No-MTA

2.44 (1.73–3.42)

 

1.85 (1.29–2.63)

 
  1. HR hazard ratio, CI confidence interval, dmft decayed‐missing filled‐teeth, MTA mineral trioxide aggregate