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Table 1 Sample characterization.

From: Pain, pain intensity and pain disability in high school students are differently associated with physical activity, screening hours and sleep

   N (%)
Gender (n = 969) Male 467(48.2)
Female 502(51.8)
Age (years) (n = 969) 13–15 511(52.7)
≥16 458(47.3)
Weight (Kg) (n = 969)   57.3 ± 11.9
Height (m) (n = 969)   1.64 ± 0.11
Scholar level (n = 969) 7° grade 212 (21.9)
8° grade 192 (19.8)
9° grade 180 (18.6)
10° grade 101 (10.4)
11° grade 141 (14.6)
12° grade 143 (14.8)
Sleeping hours (n = 969) ≤6 h 22 (2.3)
[6;7] hours 322 (33.2)
[8;9] hours 576 (59.4)
≥10 h 49 (5.1)
Disability (n = 652)a No disability 281 (43.1)
Difficulty with 1 activity 241 (37.0)
Difficulty with 2 activities 81 (12.4)
Difficulty with 3 activities 35 (5.4)
Difficulty with 4 activities 14 (2.1)
Difficulty with 5 activities 0 (0)
Disability index ([1;5]; n = 371) Mean ± SD 1.5 ± 0.8
Number of pain sites (n = 652) Pain in 1 body site 284 (29.3)
Pain in 2 body sites 190 (19.6)
Pain in 3 body sites 90 (9.3)
Pain in ≥ 4 body sites 88 (9.1)
Number of pain sites ([1;9], n = 652)a Mean ± SD 2.1 ± 1.3
Physical activity (n = 968) Moderate (Yes) 714 (73.7)
Vigorous (Yes) 575 (59.3)
Watching TV/DVDs (n = 969) No 52 (5.4)
≤1 h 404 (42.0)
[2;3] hours 399 (41.5)
≥4 h 107 (11.1)
Playing (n = 969) No 105 (10.9)
≤1 h 345 (35.9)
[2;3] hours 313 (32.5)
≥4 h 199 (20.7)
Using mobile phones (n = 969) No 113 (11.7)
≤1 h 361 (37.5)
[2;3] hours 195 (20.3)
[4;5] hours 105 (10.9)
≥5 h 188 (19.5)
Using computers (n = 969) No 86 (8.9)
≤1 h 375 (39.0)
[2;3] hours 311 (32.3)
≥4 h 190 (19.8)
  1. a652 was the number of participants reporting pain in at least one body site