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Table 1 Descriptive statistics and comparison of success rates between different categories

From: Distance to alveolar crestal bone: a critical factor in the success of orthodontic mini-implants

Factor

N

Success rate (%)

Chi-square

p

Gender

Male

131

91.7

3.641

0.056

Female

129

84.1

Age (years)

< 20

112

87.5

1.493

0.494

20–30

103

86.4

> 30

45

93.6

Jaw

Maxilla

209

90

3.568

0.088

Mandible

51

80.4

Side

Right

143

88.2

0.163

0.705

Left

117

87.6

Site

C–Pm1

25

88.0

3.853

0.278

Pm1–Pm2

30

86.7

Pm2–M1

131

91.6

M1–M2

74

82.4

MI type

Type 1

113

85

1.854

0.173

Type 2

147

90.5

  1. *Significant, p < 0.05
  2. C canine; Pm1, Pm2 first, second premolars; M1, M2 first, second molars
  3. Type 1, AbsoAnchor; type 2, Imtec