Table 2: Summary of results. The findings were classified as diagnoses if clinical interviews were used in the original study, and, if only tests were used, the findings were considered as symptoms (note: In Tellez 2015 a semi-structured clinical interview was administered by telephone, and the findings were considered as symptoms).

Comorbid Findings and Studies with Statistically Significant Associations Diagnoses in Population-Based Studies Symptoms in Population-Based Studies Diagnoses in patient-Based Studies Symptoms in Patient-Based Studies
Anxiety-related disorders
9 studies with positive correlations
**(Hägglin et al. 2001) *(Kaakko et al. 1998)
***(Halonen et al. 2014, Locker et al. 2001)
Roy-Byrne et al. 1994:
20%1
Moore et al. 1995:
30% 1 (GAD)
*(Hakeberg et al. 2001, Pekkan et al. 2011)
***(Aartman et al. 1997,
DeJongh et al. 1998)
Agoraphobia
3 studies with positive correlations
(no studies) *(Locker et al. 2001)
***(Locker et al. 1997)
(no studies) **(Aartman et al. 1997)
Social phobia
3 studies with positive correlations
(no studies) **(Locker et al. 2001) Moore et al. 1995:
46% 1
**(Tellez 2015)
Specific (simple) phobia (other than dental phobia)
7 studies with positive correlations
***(Hägglin et al. 2001) *(Locker et al. 2001)
***(Locker et al. 1997)
Moore et al. 1995:
19% 1
Roy-Byrne et al. 1994: 45% 1
***(Tellez 2015, DeJongh et al. 1998)
Mood disorder/ depression
8 studies with positive correlations
**(Hägglin et al. 2001) ***(Halonen et al. 2014)
*(Kaakko et al. 1998, Locker et al. 2001)
Roy-Byrne et al. 1994:
16% 1
*(Pekkan et al. 2011)
**(Aartman et al. 1997, Hakeberg et al. 2001)
Substance & alcohol use disorder
2 studies with positive correlations
(no studies) *(Locker et al. 2001) Roy-Byrne et al. 1994:
4% 1
(no studies)
Other DSM-IV Axis I disorders
4 studies with positive correlations
**psychiatric impairment and ***social disability (Hägglin et al. 2001) ***number of other psychiatric symptoms (Locker et al. 1997)
*conduct disorder (Locker et al. 2001)
(no studies) *somatization *cognitive-performance difficulty **interpersonal sensitivity and paranoid ideation
(Aartman et al. 1997)

Cohen's d <0.5 or Pearson's r <0.3 or Odds Ratio <2.5 or Difference in percentage <18 ** Cohen's d<0.8 or Pearson's r <0.5 or Odds Ratio <4 or Difference in percentage <30 *** Cohen's d ≥0.8 or Pearson's r ≥0.5 or Odds Ratio ≥4 or Difference in percentage ≥30 (Rosenthal 1996) 1 Prevalence of comorbid diagnosis in dentally anxious participants.