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Table 4 Quality of included randomized controlled trials (RCTs) using Cochrane’s RoB 2 tool

From: Patient satisfaction and survival of maxillary overdentures supported by four or six splinted implants: a systematic review with meta-analysis

Study

Randomisation process

Deviations from intended invervention

Missing outcome data

Measurement of the outcome

Incomplete outcome data addressed

Selection of the reported result

Overall RoB

Boven et al. [23]

High

Low

Some concerns

Low

Low

Low

High

Park et al. [31]

High

Low

Some concerns

Low

Low

Low

High

Slot et al. [19]

High

Some concerns

Low

Low

Low

Low

High

Slot et al. [20]

High

Some concerns

Low

Low

Low

Low

High

Slot et al. [21]

High

Some concerns

High

Low

Low

Low

High

Slot et al. [22]

High

Some concerns

High

Low

Low

Low

High

  1. Deviations from intended interventions (involving blinding) should be interpreted with caution