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Table 8 Associations between RF-EMF exposures and having a ‘Painful texting thumb’ (symptom)

From: The relationship between adolescents’ well-being and their wireless phone use: a cross-sectional study

Symptom Symptom categories (N for unadjusted model/N for adjusted model) Exposure Exposure categories (N for unadjusted model/N for adjusted model) Unadjusted OR (95% CI) for each exposure category Adjusted OR (95% CI) for each exposure category Confounders in model
Painful texting thumb No (268/212) Cordless calls > 10 minutes weekly 0 (62/46) 1 1 Cold/flu+
1 or 2 times weekly (44/40) 1-2 (103/84) 4.11 (1.16-14.54)* 3.65 (0.99-13.53) Sex
3 times to most (17/17) 3-9 (84/65) 3.88 (1.90-14.11) 2.54 (0.66-9.83) Age
10-120 (80/74) 9.61 (2.77-33.42)** 7.02 (1.93-25.53)*
Painful texting thumb No, hardly ever (287/287) Minutes on cordless phone daily 0- < 5 (147/147) 1 1 Cold/flu+
1 or 2 weekly (42/42) 5-15 (103/103) 2.34 (1.17-4.71) 2.26 (1.12-4.54)
3 or more times weekly (17/17) <15-240 (96/96) 3.37 (1.73-6.57)** 4.54 (1.62-6.19)**
Painful texting thumb No, hardly ever (-/287) Cellphone calls >10 minutes weekly 0 (-/274) Model invalid 1 Cold/flu+
1 or 2 times weekly (-/45) 1-6 (-/65) 1.37 (0.70-2.70) Sex- ♂
3 or more times weekly (-/19) 7-35 (-/12) 4.43 (1.27-15.44) Age
Painful texting thumb No (157/157) Billed texts sent weekly 0 (42/42) 1 1 Cold/flu+
1 or 2 times weekly (27/27) 1-99 (74/74) 7.55 (0.96-59.3) 6.39 (0.80-51.2) TV in bedroom
3 to most of the time (10/10) 100-499 (63/63) 16.46 (2.14-126.3)* 11.94 (1.52-94.1)* Age
    500+ (15/15) 27.19 (2.99-247.4)* 21.54 (2.24-207.5)  
  1. Bold font Sig. p < 0.05; *Sig. p ≤ 0.01; **Sig. p ≤ 0.001; + positive association; - negative association; ♂male; ‘Model invalid’ means it did not meet the criteria outlined in the methods.