Table 3

- Multivariable analysis of the association between body size during different school levels and the odds of developing multiple sclerosis.

School level /Body sizeAll*Females
Adjusted OR (95% CI)P-valueAdjusted OR (95% CI)P-value
Primary school
11.12 (0.55–2.26)0.7621.70 (0.75–3.88)0.206
20.85 (0.45–1.60)0.6141.18 (0.56–2.49)0.671
3Reference Reference 
40.36 (0.17–0.76)0.0070.41 (0.18–0.95)0.039
50.51 (0.18–1.45)0.2070.96 (0.26–3.51)0.951
6–91.57 (0.41–6.05)0.5161.04 (0.24–4.60)0.958
Intermediate school
10.39 (0.17–0.90)0.0290.25 (0.09–0.66)0.005
20.87 (0.46–1.65)0.6750.46 (0.21–0.98)0.045
3Reference Reference 
41.07 (0.54–2.14)0.8450.87 (0.39–1.95)0.740
53.75 (1.41–10)0.0083.04 (1.01–9.11)0.047
6–93.75 (1.10–12.78)0.0354.59 (1.01–20.86)0.048
Secondary school
10.82 (0.32–2.16)0.6940.87 (0.30–2.48)0.788
21.68 (0.90–3.12)0.1011.79 (0.88–3.63)0.109
3Reference Reference 
41.40 (0.73–2.68)0.3111.61 (0.73–3.55)0.242
51.23 (0.49–3.07)0.6561.61 (0.53–4.87)0.400
6–91.49 (0.45–4.90)0.5151.44 (0.34–6.09)0.617
University
11.92 (0.80–4.60)0.1441.69 (0.67–4.26)0.269
21.31 (0.72–2.39)0.3781.56 (0.80–3.05)0.194
3Reference Reference 
40.60 (0.33–1.07)0.0840.68 (0.33–1.40)0.291
51.03 (0.51–2.09)0.9300.92 (0.39–2.16)0.851
6–90.97 (0.37–2.57)0.9500.79 (0.24–2.58)0.696

*Adjusted for age, gender, and hospital, OR - odds ratio, CI - confidence interval