Table 4

Logistic regression of having many musculoskeletal symptoms, or many psychosomatic symptoms in relation to Type D personality, odds ratio (OR), 95% CI, p-values, unadjusted model, and model adjusted for confounding factors
Boys Girls
Unadjusted model Adjusted modela Unadjusted model Adjusted modela
ORb 95% CI p ORb 95% CI p ORb 95% CI p ORb 95% CI p
Model 1
Many musculoskeletal symptoms
Type D personality 2.42 1.70-3.44 <0.001 2.39 1.62-3.52 <0.001 2.46 1.93-3.13 <0.001 2.38 1.82-3.11 <0.001
R2 = 1.8% R2 = 3.4% R2 = 3.1% R2 = 4.4%
Many psychosomatic symptoms
Type D personality 5.74 4.23-7.80 <0.001 5.39 3.83-7.57 <0.001 5.43 4.29-6.88 <0.001 5.54 4.26-7.21 <0.001
R2 = 9.0% R2 = 11.7% R2 = 11.4% R2 = 14.4%
Model 2
Many musculoskeletal symptoms
Z(SI) c 0.92 0.77-1.09 0.327 0.89 0.73-1.08 0.231 0.79 0.69-0.89 <0.001 0.80 0.69-0.91 0.001
Z(NA) d 2.04 1.75-2.39 <0.001 2.08 1.76-2.47 <0.001 2.25 1.99-2.54 <0.001 2.19 1.92-2.50 <0.001
Z(SI) × Z(NA) 0.95 0.86-1.05 0.298 0.95 0.85-1.07 0.414 1.07 0.98-1.17 0.133 1.08 0.99-1.19 0.093
R2 = 8.4% R2 = 9.7% R2 = 12.9% R2 = 13.3%
Many psychosomatic symptoms
Z(SI) c 0.97 0.77-1.19 0.797 0.98 0.79-1.23 0.887 0.83 0.73-0.95 0.006 0.89 0.77-1.01 0.068
Z(NA) d 3.58 3.00-4.27 <0.001 3.44 2.85-4.16 <0.001 4.56 3.95-5.25 <0.001 4.40 3.78-5.12 <0.001
Z(SI) × Z(NA) 0.89 0.80-1.00 0.058 0.91 0.80-1.04 0.157 1.05 0.93-1.19 0.390 1.05 0.92-1.19 0.487
R2 = 25.2% R2 = 26.5% R2 = 36.7% R2 = 37.4%

a Adjusted for living conditions, parental employment status, ethnicity, socioeconomic status, BMI, and exercise habits.

b Nagelkerke R2 is given for the analysis of each symptom category, separated by sex.

c Social inhibition, Z-score transformation.

d Negative affectivity, Z-score transformation.

Condén et al.

Condén et al. BMC Pediatrics 2013 13:11   doi:10.1186/1471-2431-13-11

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