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Table 2 Association Between Characteristics of the Included Randomised Controlled Trials and the Type of Intention-to-treat Reporting

From: Modified versus standard intention-to-treat reporting: Are there differences in methodological quality, sponsorship, and findings in randomized trials? A cross-sectional study

Type of Intention-to-treat

Journal

Medical vs. specialty

Placebo

Non-placebo vs. placebo

Post-randomization exclusion

Reported vs. not reported

Flow chart

Not reported vs. reported

Sample size calculation

Not reported vs. reported

Lost to follow-up

Not reported vs. reported

Sequence Generation

Not adequate vs. adequate

Allocation concealment

Not adequate vs. adequate

Blinding

Not adequate vs. adequate

 

Unadjusted Odds Ratio (Confidence Interval 95%)

mITT

1.16

(0.63 to 2.12)

2.67

(1.44 to 4.92)

2.62

(1.41 to 4.88)

1.17

(0.62 to 2.20)

1.87

(0.87 to 4.02)

1.09

(0.59 to 2.01)

1.42

(1.05 to 1.93)

1.01

(0.74 to 1.36)

0.50

(0.27 to 0.93)

"no ITT"

2.64

(1.64 to 4.25)

1.87

(1.14 to 3.05)

1.30

(0.82 to 2.06)

3.14

(1.94 to 5.07)

4.47

(2.55 to 7.88)

2.41

(1.50 to 3.86)

1.52

(1.23 to 1.98)

1.53

(1.17 to 1.99)

1.25

(0.74 to 2.12)

 

Adjusted Odds Ratio (Confidence Interval 95%)

mITT

1.43

(0.61 to 3.35)

2.85

(1.22 to 6.63)

3.43

(1.70 to 6.95)

1.05

(0.47 to 2.37)

3.24

(1.32 to 7.98)

1.13

(0.54 to 2.36)

1.15

(0.79 to 1.69)

0.98

(0.69 to 1.41)

1.00

(0.43 to 2.34)

"no ITT"

1.87

(0.94 to 3.69)

4.11

(2.02 to 8.36)

2.27

(1.30 to 3.93)

1.92

(1.03 to 3.55)

4.05

(2.10 to 7.84)

2.09

(1.20 to 3.66)

1.06

(0.79 to 1.43)

1.24

(0.91 to 1.69)

1.88

(0.90 to 3.94)

  1. ITT is the comparison group.
  2. mITT = modified intention-to-treat
  3. ITT = intention-to-treat.