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. 2016 Aug 18;2(1):e000115. doi: 10.1136/bmjsem-2016-000115

Table 2.

Logistic regression of DE with sociodemographic variables†

EDI‡
EDI-DT§
EDI-BD¶
Explanatory OR 95% CI p Value OR 95% CI p Value OR 95% CI p Value
Sociodemographic variables
Sport
 Biathlon 1.54 0.68 to 3.52 0.305 0.82 0.23 to 2.88 0.751 1.39 0.59 to 3.27 0.455
 Both sports 2.00 0.66 to 6.06 0.219 0.60 0.07 to 5.51 0.653 2.11 0.69 to 6.39 0.189
Age
 Women 17 0.51 0.17 to 1.48 0.215 0.40 0.08 to 1.95 0.257 0.58 0.20 to 1.73 0.331
 Women 18 1.34 0.55 to 3.28 0.522 0.40 0.10 to 1.64 0.203 1.53 0.62 to 3.78 0.359
Competitive status
 Not active 2.94 1.22 to 7.10 0.016* 5.50 1.56 to 19.42 0.008* 2.58 1.04 to 6.41 0.042*
Education
 USS elite sports** 2.40 1.00 to 5.89 0.055 9.44 1.74 to 51.31 0.009* 1.84 0.74 to 4.56 0.189
 USS of general studies 1.42 0.51 to 3.97 0.503 13.79 2.34 to 81.35 0.004* 1.32 0.47 to 3.66 0.597
 Higher education 1.04 0.30 to 3.57 0.955 2.96 0.35 to 24.72 0.317 0.61 0.15 to 2.55 0.501
 Non-student 0.00 0.00 0.999 0.00 0.00 0.999 0.00 0.00 0.999
Constant 0.12 0.00 0.000 0.12 0.000
 R2 (Nagelkerke) 0.15 0.13
 R2 (Cox and Snell) 0.09 0.08
 −2 Log likelihood 195.17 186.72
 X2 21.44 17.64

*p<0.05.

†Logistic regression analysis with cross-country skiing, women in the age group of 19+, active competitive status, and USS of sports specialisation as baseline categories.

‡EDI is based on a cut-off score ≥15 on EDI-DT and/or the cut-off score ≥14 on EDI-BD.

§EDI-DT is based on a cut-off score ≥15 on EDI-DT.

¶EDI-BD is based on a cut-off score ≥14 on EDI-BD.

**Private USS combining education and sports for highly talented athletes.

BD, body dissatisfaction; DE, disordered eating; DT, drive for thinness; EDI, eating disorders inventory; USS, upper secondary school.