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. 2017 Jun 23;7(6):e013542. doi: 10.1136/bmjopen-2016-013542

Table 1.

Descriptive analyses of participant perceived stress and its determinants as a total sample and according to bicycle commuting status

Variables Total sample (788) Bicycle commuting status
Non-bicycle commuters (390) Bicycle commuters (398) p Value*
n % n % n %
Outcome
 Stressed (median) (yes) 280 35.53 162 41.97 118 30.33 0.001
Individual determinants
 Age (median; P25–P75) 36 29–43 37 30–45 35 29–41 0.025
 Total PA – min/week (median; P25–P75) 424.99 269.99–700.00 374.99 209.99–624.99 484.98 329.99–734.99 <0.001
 MVPA – min/week (median; P25–P75) 197.49 72.50–374.99 90.00 0–240.00 299.99 159.99–464.99 <0.001
 VPA – min/week (median; P25–P75) 72.50 0–180.00 35.00 0–134.99 105.00 0–225.00 <0.001
 Gender (woman) 410 52.03 234 60.00 176 44.22 <0.001
 Country of birth (non-Spanish) 97 12.31 41 10.51 56 14.11 0.125
 Working status (student) 104 13.20 347 87.19 51 12.81 0.748
 Education level (university studies completed or equivalent-level education) 551 69.92 247 63.33 304 76.38 <0.001
 Living with family/partner 635 80.58 327 83.85 308 77.58 0.026
 Employed people in household (2–5) 510 64.72 261 67.27 249 62.88 0.198
 MEDEA Index 0.355
  First tertile (least deprived) 263 33.38 130 33.33 133 33.42
  Second tertile 263 33.38 122 31.28 141 35.43
  Third tertile (most deprived) 262 33.25 138 35.38 124 31.16
 Children in household (yes) 279 35.41 151 38.82 128 32.24 0.054
 Children <3 years in household (yes) 64 8.12 36 9.25 28 7.07 0.264
 Self-perceived health (very good/excellent) 323 40.99 140 35.90 183 45.98 0.004
 BMI (overweight/obese) 212 26.9 124 31.96 88 22.11 0.002
 Chronic disease (yes) 61 7.74 25 6.41 36 9.05 0.166
 Stress releasing (agreement) 658 83.50 302 79.47 356 90.59 <0.001
 Bicycle trip enjoyment (agreement) 629 79.82 249 65.35 380 96.20 <0.001
Environmental determinants
 Commute distance, estimated (km) (mean; SD) 3.85 2.05 4.38 2.25 3.35 1.70 <0.001
 Public bicycle stations (mean; SD)
  Home, count in 400 m buffer 4.25 2.54 3.75 2.51 4.75 2.47 <0.001
  Work/study, count in 400 m buffer 4.92 3.11 4.50 3.13 5.33 3.04 <0.001
 Greenness, NDVI (mean; SD)
  Home, average in 400 m buffer 0.79 1.07 0.91 1.08 0.68 1.06 <0.001
  Work/study, average in 400 m buffer 0.62 0.96 0.70 1.07 0.55 0.83 0.086
  Commute route, average in RBA 0.97 0.96 1.07 1.06 0.87 0.85 0.062
 NO2 (μg m−3)(mean; SD)
  Home, concentration in 400 m buffer 76.20 17.52 75.16 17.12 77.21 17.87 0.058
  Work/study, concentration in 400 m buffer 78.43 22.51 78.56 23.92 78.31 21.10 0.843
  Commute route, concentration in RBA 84.40 16.97 84.24 16.82 84.55 17.13 0.987
 Noise, >55 dB (mean; SD)
  Home, proportion in 400 m buffer 78.63 11.40 78.77 10.99 78.50 11.79 0.823
  Work/study, proportion in 400 m buffer 79.59 14.66 79.09 14.86 80.07 14.46 0.369
  Commute route, proportion in RBA 77.40 9.04 77.51 8.58 77.30 9.48 0.924
 Bikeability (mean; SD)
  Home, weighted average in 400 m buffer 6.20 1.41 5.93 1.45 6.46 1.31 <0.001
  Work/study, weighted average in 400 m buffer 6.56 1.39 6.31 1.54 6.79 1.17 <0.001
  Commute route, weighted average in RBA 6.70 1.12 6.45 1.20 6.94 0.98 <0.001

Data are n and %, unless otherwise noted. There are missing data in perceived stress (13; 1.65%), total PA (5; 0.63%), country of birth (1; 0.13%), living with family/partner (1; 0.13%), employed people in household (4; 0.51), children in household (2; 0.25%), children <3 years old in household (3; 0.38%), BMI (2; 0.25%), stress releasing (15; 1.90%), bicycle trip enjoyment (12; 1.52%), commute distance (20; 2.54%), greenness (20; 2.54%), NO2 (20; 2.54%) . * χ2test, except for age, total PA, MVPA, VPA and all the environmental determinants (Mann Whitney U test).

BMI, body mass index; MEDEA, Mortalidad en áreas pequeñas Españolas y Desigualdades socioEconómicas y Ambientales, in Spanish (Environmental and socioEconomic Inequalities in Mortality in small Spanish areas, translated to English); MVPA, moderate-to-vigorous physical activity; NDVI, Normalised Difference Vegetation Index; PA, physical activity; RBA, route by area; total PA, total physical activity; VPA, vigorous physical activity.