Table 2

Description of the responding researchers, n (%)

n=116
Experience with accelerometer data
 Interpretation only21 (18.1)
 Interpretation and data preprocessing13 (11.2)
 Interpretation, (data preprocessing) and data analysis82 (70.7)
Studied populations
 Only children and adolescents (0–17 years)28 (24.8)
 Only adults (18–64 years)16 (14.2)
 Only older adults (≥65 years)15 (13.3)
 Children and adolescents (0–17 years)+adults (18–64 years)13 (11.5)
 Children and adolescents (0–17 years)+older adults (≥65 years)3 (2.7)
 Adults (18–64 years)+older adults (≥65 years)23 (20.4)
 All three age groups15 (13.3)
Purpose of measurement
 Outcome only69 (59.5)
 Exposure or confounder only12 (10.3)
 Outcome and exposure/confounder31 (26.7)
 Other4 (3.4)
Accelerometer placement (multiple answers)
 Hip69 (59.5)
 Wrist54 (46.6)
 Thigh21 (18.1)
 Ankle11 (9.5)
 Other placements17 (14.7)
Accelerometer brand (multiple answers)
 ActiGraph78 (67.2)
 activPAL18 (15.5)
 Axivity14 (12.1)
 GENEActiv14 (12.1)
 SenseWear7 (6.0)
 Other devices26 (22.4)
Software used
 Shelf software82 (73.2%)
  Of these (multiple answers)…
  …ActiLife51 (62.2%)
  …R package GGIR17 (20.7%)
 Own software implementations30 (26.8%)