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Table 4 95% confidence intervals for imprecision based on previously reported 6-month weight and MUAC gain

From: Reliability of anthropometric measures in a longitudinal cohort of patients initiating ART in West Africa

   

Best case

Worst case

 

6-month gain

 

TEM

% gain represented by ± 2TEM

TEM

% gain represented by ± 2TEM

Weight (kg)

2.8*

     
  

Obs. 1 (intra)

0.66

65.3

0.84

83.2

  

Obs. 2 (intra)

0.51

50.5

0.58

57.4

  

Obs. 3 (intra)

0.65

64.3

2.26

223.7

  

Inter

0.30

29.7

0.97

96.0

  

Total‡

0.68

67.3

1.74

172.1

MUAC (cm)

1†

     
  

Obs. 1 (intra)

0.35

97.0

1.66

460.1

  

Obs. 2 (intra)

0.36

99.8

0.51

141.4

  

Obs. 3 (intra)

0.49

135.8

0.69

191.3

  

Inter

0.43

119.2

1.30

360.3

  

Total‡

0.77

213.6

1.57

435.1

  1. * Obtained from Saghayam et al. (2007)
  2. † Obtained from Kamya et al. (2007)
  3. ‡ Total TEM calculated using best or worse intra- and inter-TEM as indicated in table 4
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BMC Medical Research Methodology

ISSN: 1471-2288

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