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Table 1 General characteristics and accelerometer indices across participant groups, and between algorithms for sedentary indices

From: Deriving objectively-measured sedentary indices from free-living accelerometry data in rural and urban African settings: a cost effective approach

 

Urban (office, n = 26)

Rural (forestry, n = 30)

Rural (DHDSS, n = 262)

Female (%)a

50

40

100

Age (years)

31.8 (6.6)

36.6 (10.1)

35.1 (10.5)

Body mass index (kg m−2)

26.9 (5.6)

22.3 (3.5)b

26.9 (5.6)

Days monitored

5.0 (1.4)

5.7 (1.3)

5.5 (1.6)

Registered time (min day−1)

860 (64)

974 (163)b

870 (140)

Active time (min day−1)

365 (65)

545 (75)b

422 (83)c

Average active counts (cts min−1)

973 (310)

1256 (286)b

956 (195)

Light activity (min day−1)

223 (43)

248 (58)d

218 (50)

Moderate-1 activity (min day−1)

86 (24)e

187 (44)e

157 (53)e

Moderate-2 to Vigorous activity (min day−1)

56 (33)

110 (50)b

47 (29)

Sedentary time (min day−1)

1075 (65)

896 (75)b

1018 (83)c

Sedentary breaks (breaks ≥ 1 min)

 Number per day

  MAH/UFFE algorithm

87 (11)f

76 (10)

71 (14)

  Healy–Matthews algorithm

86 (11)

75 (10)

70 (14)

 Minutes per break

  MAH/UFFE algorithm

4.2 (0.8)e

7.3 (1.4)e

6.2 (1.8)e

  Healy–Matthews algorithm

4.3 (0.8)

7.3 (1.4)

6.2 (1.8)

Total counts (cts day−1)

366 862 (136 960)

692 972 (193 778)b

412 776 (124 832)

Average counts (cts day−1 min−1)

432 (171)

721 (193)b

482 (155)

  1. DHDSS Dikgale Health and Demographic Surveillance System Site
  2. Except avalues are reported as raw mean (sd); Active: ≥ 100 cts min−1; Light: 100–759 cts min−1; Moderate-1: 760–1951 cts min−1; Moderate-2 to Vigorous: ≥ 1952 cts min−1; Sedentary: ≤ 99 cts min−1; Average counts = Total counts/registered time
  3. bRural (Forestry) vs Urban (Office), Rural (DHDSS) p ≤ 0.010
  4. cRural (DHDSS) vs Urban (Office) p < 0.0001
  5. dRural (Forestry) vs Rural (DHDSS) p = 0.007
  6. eRural (Forestry) vs Urban (Office) vs Rural (DHDSS) p ≤ 0.007
  7. fUrban (Office) vs Rural (Forestry), Rural (DHDSS) p ≤ 0.005