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Table 2 Summary of random-effects meta-analysis estimates by type of analysis

From: A meta-analysis of weight gain in first year university students: is freshman 15 a myth?

 

Specification

N studies

N students

Pooled estimate

Q statistics

P-Value of heterogeneity

I2

Mean weight change

Weighted on SE

22

5549

1.36 kg (CI: 1.15–1.57)

141.2

P < 0.001

85.1 %

Subgroup analysis

By location

15

3661

USA: 1.32 kg (1.08–1.56)

90.8

P < 0.001

84.6 %

  

1

120

UK: 0.83 kg (0.45–1.21)

0.00

NA

NA

  

5

1667

Canada: 1.71 kg (1.04–2.38)

29.7

P < 0.001

86.5 %

  

1

101

Belgium: 0.97 kg (0.57–1.37)

0.00

NA

NA

Subgroup analysis

By body weight measurement method

4

3700

Self-report: 1.04 kg (0.63–1.44)

26.2

P < 0.001

88.6 %

  

18

1849

Measured: 1.45 kg (1.21–1.69)

89.22

P < 0.001

80.9 %

Subgroup analysis

By study length

8

423

<4 mths: 1.24 kg (0.96–1.53)

44.03

P < 0.001

77.3 %

  

14

5126

4–8 mths: 1.47 kg (1.13–1.81)

95.74

P < 0.001

89.6 %

Subgroup analysis

By gender

13

2876

Females: 1.34 kg (1.02–1.65)

59.59

P < 0.001

79.9 %

  

8

1789

Males: 1.43 kg (0.90–1.97)

42.36

P < 0.001

83.5 %