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. 2010;28(1):55–61. doi: 10.3109/02813431003690596

Table V.

Protective and risk factors explaining the persistent frequent attendance (FA).

Factors for FA persistence Predicted class Evidence strength

Temporary FA
Inversed (if temporary FA)
Protective % 95% CrI (%) PO 95% CrI % 95% CrI (%) PO 95% CrI
Male gender 80* 70.6 87.4 4.0* 2.4 6.9 36* 24.3 48.3 0.6* 0.3 0.9
Health centre visits < 12 78* 68.0 85.5 3.5* 2.1 5.9 74* 62.5 84.3 2.8* 1.7 5.4
Body Mass Index <25 83* 74.6 90.2 4.9* 2.9 9.2 42 30.4 55.1 0.7 0.4 1.2
No fear of death 77* 66.7 84.5 3.3* 2.0 5.5 79* 68.1 88.4 3.8* 2.1 7.6
No alcohol abstinence 77* 67.6 85.3 3.3* 2.1 5.8 83* 72.0 90.9 4.9* 2.6 10.0
No irritable bowel syndrome 72* 61.6 80.5 2.6* 1.6 4.1 93* 84.7 97.7 13.3* 5.5 41.9
Moderate patient satisfaction 81* 71.3 88.1 4.3* 2.5 7.4 67* 55.2 78.6 2.0* 1.2 3.7

Persistent FA
Inversed (If persistent FA)
Risk % 95% CrI (%) PO 95% CrI % 95% CrI (%) PO 95% CrI

Female gender 36* 26.8 47.0 0.6* 0.4 0.9 80* 62.9 92.3 4.0* 1.7 11.9
Health centre visits ≥12 48 37.8 58.8 0.9 0.6 1.4 54 35.1 71.8 1.2 0.5 2.5
Body Mass Index ≥30 55 44.7 65.5 1.2 0.8 1.9 42 25.0 61.3 0.7 0.3 1.6
Fear of death 50 40.1 61.0 1.0 0.7 1.6 46 28.2 64.9 0.9 0.4 1.8
Alcohol abstinence 53 42.9 64.0 1.1 0.8 1.8 44 25.0 61.3 0.8 0.3 1.6
Irritable bowel syndrome 55 44.7 65.5 1.2 0.8 1.9 20* 7.7 37.1 0.3* 0.1 0.6
Low patient satisfaction 58 47.1 68.0 1.4 0.9 2.1 44 25.0 61.3 0.8 0.3 1.6

Notes: Presented together with posterior odds (PO) and their 95% credibility intervals (Crl). CrI: 95% credibility intervals based on Jeffreys interval.

* Credible difference. According to CrIs, all protective factors are credible presenting good-to-moderate POs. However, only female gender is a credible risk factor (PO 0.6; 95% CrI 0.4–0.9). Thus, model gives good guidance for avoiding persistent frequent attendance and is a feasible proactive prevention model, but it does not predict the risk very well. Most notably, this is due to modest sample size in the frequent FA group, because the evidence strength for risk factors is only credible for female gender (PO 4.0; 95% CrI 1.7–11.9) and irritable bowel syndrome (PO 0.3; 95% CrI 0.1–0.6). The evidence strength for protective factors is credible for all variables except for BMI.