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. 2018 Mar 7;18:33. doi: 10.1186/s12903-018-0496-4

Table 1.

Mean dental fear in relation to age, sex, and school type

Variables N (%) Mean (SD) 95% CI Min–Max Test value
(P value)
Lower Bound Upper Bound
Age 12 312 (20.5) 27.96 (11.23) 26.71 29.21 15–74 F = 7.42
(< 0.001*)
13 464 (30.5) 26.01(9.07a) 25.18 26.84 15–63
14 413 (27.1) 25.55 (8.47a) 24.73 26.37 15–65
15 333 (21.9) 24.63 (8.35a) 23.73 25.53 15–68
Sex Male 826 (54.3) 23.12 (7.12) 22.63 23.60 15–68 t = 193.16
(< 0.001*)
Female 696 (45.7) 29.39 (10.41) 28.62 30.17 15–74
School Type Public 1027 (67.5) 26.52 (9.75) 25.93 27.12 15–74 t = 10.55
(< 0.001*)
Private 495 (32.5) 24.87 (8.23) 24.14 25.60 15–69
Total 1522 (100) 25.99 (9.31) 25.52 26.45 15–74

N total number of children, SD Standard deviation, CI Confidence interval

*Statistically significant (P < 0.05), Analysis of variance, t-test

Means sharing the same alphabetical letter superscripts are not significantly different from each other (post-hoc, P ≥ 0.05)

Means that have different alphabetical letter superscripts are significantly different from each other (post-hoc, P < 0.05)