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Table 2 Methodological characteristics of studies included (n = 111)

From: The reporting of pilot and feasibility studies in the top dental specialty journals is suboptimal

Study characteristic

n, (%)

Randomized

54, (48.6)

Quantitative

103, (92.8)

Qualitative

0, (0)

Mixed

8, (7.2)

Trial design:

 Parallel group

57, (51.4)

 Single arm

41, (36.9)

 Split mouth

8, (7.2)

 Cross over

3, (2.7)

 Cluster

2, (1.8)

Intervention type:

 Surgery/procedure

65, (58.6)

 Drug

26, (23.4)

 Material

4, (9.0)

 Counseling/lifestyle

9, (8.1)

Industry funded

10, (9.0)

Stated rationale for sample size

25, (22.5)

Median sample size (min, max)

25, (3, 392)