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Table 2 Non-inferiority of ITC relative to NTC

From: Acceptability of insecticide-treated clothing for malaria prevention among migrant rubber tappers in Myanmar: a cluster-randomized non-inferiority crossover trial

Indicator

Distribution 1

Distribution 2

Difference (NTC-ITC)

Conclusion of non-inferiority

ITC

Arm 1

(n = 116)

NTC

Arm 2

(n = 111)

ITC

Arm 2

(n = 100)

NTC

Arm 1

(n = 101)

Mean absolute difference*

95% CI

N

%

N

%

N

%

N

%

Clothing looks nice

107

97

96

95

92

93

94

95

1.2

[−4.7 to 7.0]

Yes

Clothing is pleasant to wear for nighttime work

97

93

84

93

88

98

98

83

−4.7

[−12.2 to 2.8]

Yes

Clothing is durable

109

97

104

99

92

100

100

100

−1.0

[−3.8 to 1.9]

Yes

Clothing is easy to clean

111

96

106

100

94

96

100

100

4.3

[−1.3 to 10.0]

Inconclusive

Clothing reduces mosquito bites

109

97

104

99

93

99

99

90

0.0

[−7.4 to 7.6]

Yes

Would recommend clothing to family and friends

112

97

106

100

94

99

100

100

1.0

[−2.1 to 4.2]

Yes

Would buy clothing if available in market

112

88

106

94

94

96

100

89

−1.3

[−9.1 to 6.3]

Yes

Overall, likes the clothing

112

97

106

99

94

99

100

99

0.0

[−3.1 to 3.3]

Yes

  1. Non-inferiority is indicated if the upper 95% CI around the mean difference falls below the pre-defined non-inferiority margin of 10%
  2. * From OLS logistic regression controlling for order and cluster size