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Table 4 Crude and adjusted OR (95% CI) of selected spectator and movie vision characteristics and visually induced symptoms after the vision of a 3D movie. Adjusted for age, gender, educational level, employment status and movie appreciation

From: A survey of visually induced symptoms and associated factors in spectators of three dimensional stereoscopic movies

   Tired eyes Headache Dizziness Nausea
Use of glasses or prescription lenses Crude OR Adjusted OR 0.75(0.54-1.06) § 0.78(0.55-1.10) § 1.06 (0.74-1.51) 1.08(0.75-1.55) 1.66 (0.92-3.01)° 1.67(0.92-3.06)§ 1.21 (0.66-2.23) 1.25(0.67-2.32)
Headache often and very often Crude OR Adjusted OR 1.12 (0.82-1.52) 1.10(0.81-1.51) 1.80 (1.29-2.52)** 1.81(1.29-2.54)** 1.28 (0.72-2.30)§ 1.07(0.59-1.95) 1.60 (0.90-2.85)§ 1.39(0.78-2.52)
Carsickness often and very often Crude OR Adjusted OR 0.66 (0.46-01.01) 0.67(0.46-0.97)* 1.54 (1.08-2.19)* 1.57(1.09-2.26)* 1.99 (1.10-3.60)* 1.72(0.93-3.16)° 2.73 (1.53-4.88)** 2.82(1.54-5.18)**
Recurrent vertigo >1 episode per month Crude OR Adjusted OR 1.28 (0.84-1.97) 1.17(0.75-1.82) 1.94 (1.26-3.01)* 1.73(1.10-2.71)* 3.30 (1.73-6.28)** 2.72(1.39-5.34)** 1.76 (0.85-3.63)§ 1.68(0.79-3.58)§
Use of computer or videogame console > 5 h per day Crude OR Adjusted OR 0.92 (0.66-1.28) 0.86(0.61-1.22) 0.99 (0.69-1.42) 1.02(0.69-1.49) 0.93 (0.49-1.76) 0.90(0.45-1.79) 1.33 (0.73-2.43) 1.17(0.61-2.24)
Self perceived high anxiety level Crude OR Adjusted OR 1.69 (1.12-2.54)* 1.58(1.04-2.40)* 2.16 (1.41-3.30)** 1.96(1.26-3.04)** 1.03 (0.60-2.86) 1.02(0.46-2.29) 0.89 (0.37-2.14) 0.83(0.34-2.04)
Showtime (movie starting time ≥22.30) Crude OR Adjusted OR 1.16(0.84-1.60) 1.04(0.75-1.46) 1.63(1.15-2.29)* 1.43(0.99-2.04)° 0.82(0.43-1.58) 0.78(0.39-1.56) 0.63(0.32-1.26)§ 0.62(0.30-1.29)
Movie type: animation movie Crude OR Adjusted OR 0.80 (0.59-1.09)§ 0.86(0.62-1.18) 0.68 (0.49-0.96)* 0.75(0.53-1.1)° 1.18(0.64-2.19) 1.22(0.64-2.32) 0.84 (0.47-1.51) 0.81(0.44-1.51)
Position during vision: close to the screen Crude OR Adjusted OR 1.25 (0.73-2.13) 1.20(0.70-2.05) 1.12 (0.62-2.03) 1.06(0.58-1.94) 0.76(0.23-2.52) 0.76(0.23-2.55) 0.75 (0.23-2.46) 0.75(0.23-2.51)
Movie duration >100 min Crude OR Adjusted OR 0.91 (0.67-1.24) 0.94(0.69-1.29) 0.90 (0.64-1.26) 0.92(0.65-1.31) 1.03 (0.57-1.89) 1.06(0.57-1.97) 1.18 (0.64-2.15) 1.09(0.59-2.03)
  1. ** p < 0.01;* p <0.05; ° p < 0.1; § p < 0.2.