Table 5

Subgroup analysis: head loaders with/without report of head or neck pain.

Head or neck pain

N

Mean (sd)

Std. error

Mean difference

(95% CI)

P value

(2 tailed)


Container weight (kg)

No

10

18.06 (6.5)

2.05

4.61 (-9.72-0.49)

0.069


Yes

9

22.68 (3.4)

1.14


Distance (m)

No

12

334 (209)

60.3

15.8 (-19.4-16.2)

0.854


Yes

8

350 (167)

59.2


Carrying time (min)

No

11

6 (3)

0.9

12.7 sec (-3.4-3.8m)

0.901


Yes

9

5 (4)

1.4


TDCT (min)

No

7

17 (12)

4.4

0.16 (-16.1-15.8)

0.983


Yes

6

17 (14)

5.6


CW/BW%

No

10

39 (15)

4.8

5.6 (-20.7-9.6)

0.448


yes

9

45 (16)

5.3


RPE

No

11

6.0 (3)

0.9

2.5 (-5.1-0.1)

0.051


Yes

8

8.5 (2)

0.8


1Distance is reported in meters as that from the water source to the home in one direction whilst carrying a filled water container; 2TDCT total daily carrying time: equals observed carrying time multiplied by reported usual daily frequency of water carrying; CW/BW%: container weight as a percentage of body weight; RPE: rating of perceived exertion measured with the Modified Borg Scale

Geere et al. Environmental Health 2010 9:52   doi:10.1186/1476-069X-9-52

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