Table 1 Demographic characteristics and results

Female

55.2% (79/143)

42.7% (128/293)

0.04

1.50 (1.03–2.20)

1.71 (1.05–2.80)

Family income > $60,000

91.9% (124/135)

94.3% (265/281)

0.14

0.14 (0.28–1.20)

0.23 (0.80–0.69)

Ever snore? Yes

93.7% (134/143)

87.0% (261/300)

0.05

1.95 (0.99–3.85)

1.13 (0.47–2.69)

Struggle to breathe while asleep? Yes

56.0% (80/143)

37.7% (113/300)

0.00

2.53 (1.61–3.99)

2.11 (1.19–3.73)

Witnessed apneas? Yes

46.2% (66/143)

27% (81/300)

0.00

3.23 (1.94–5.36)

2.40 (1.27–4.52)

Mouth breathes during the day? Yes

74.8% (107/143)

56% (169/300)

0.00

2.24 (1.36–3.69)

2.20 (1.16–4.16)

Dry mouth in the morning? Yes

62.2% (89/143)

48% (144/300)

0.01

2.50 (1.40–4.48)

1.90 (0.92–3.92)

Tonsil Score 3

16.8% (24/143)

14.7% (44/300)

0.00

3.41 (1.57–7.39)

2.55 (1.01–6.45)

Tonsil Score 4

26.6% (38/143)

9% (27/300)

0.00

7.96 (3.63–17.45)

5.71 (2.19–14.87)

At least one parent reported RLS symptom

85.3% (122/143)

82.3% (247/300)

0.53

1.18 (0.71–1.97)

1.25 (0.65–2.41)

At least two parent-reported GERD symptoms

19.6% (28/143)

26.3% (79/300)

0.01

NOSE score of 10 or greater

81.8% (117/143)

67% (201/300)

0.01

Tonsil size (Grade 0)

0.02% (3/143)

0% (0/300)

Tonsil size (Grade 1)

7.0% (10/143)

16.7% (50/300)

0.85

0.94 (0.47–1.86)

0.28 (0.11–0.62)

Tonsil size (Grade 2)

26.6% (38/143)

14% (42/300)

0.00

3.6 (2.12–6.12)

1.17 (0.56–2.42)

Tonsil size (Grade 3 and 4)

40.6% (58/143)

9.3% (28/300)

0.00

7.84 (4.54–13.54)

2.37 (1.17–4.82)

McGill oximetry score (2+)

12.6% (18/143)

4% (12/300)

0.001

3.42 (1.62–7.21)

1.34 (0.57–3.15)

Categorical variables

Received AT

No AT

P-value

Univariate OR (95% CI)

Adjusted OR (95% CI) ^a

Age in years (SD, range)

7.5 (3.4, 1.5–16.9)

8.5 (3.6, 0.89–17.8)

0.73

0.94 (0.89–1.00)

0.99 (0.91–1.06)