Total
Without hoarseness
Without hoarseness
With hoarseness With hoarseness
Chi-square test
Chi-square test
Unadjusted regression
Unadjusted regression
Adjusted regression**
Adjusted regression**
n n % n % X2 P* OR 95% CI OR 95% CI
Household pets No 382 351 91.88 31 8.12 2.10 0.148 Ref.
Yes 46 45 97.83 1 2.27 0.25 0.03,1.89 0.25 0.03,1.89
Previous history of hoarseness No 255 242 94.90 13 5.10 5.16 0.023 Ref.
Yes 173 154 89.02 19 10.98 2.30 1.10, 4.78 22.32 1.11, 4.83
Parents had hoarseness No 261 244 93.45 17 6.51 0.90 0.344 Ref.
Yes 167 152 91.01 15 9.98 1.42 0.69, 2.92 1.37 0.67,2.83
Cried excessively in infancy No 282 268 95.04 14 4.96 7.54 0.006 Ref.
Yes 147 128 87.07 18 12.34 2.69 1.30, 5.58 2.73 1.32,5.68
Exercise that requires loud voice No 344 318 92.44 26 7.56 0.02 0.897 Ref.
Yes 84 78 92.86 6 7.14 0.94 0.37, 2.37 0.95 0.38, 2,40
Pronunciation issues No 310 294 94.84 16 5.16 8.71 0.003 Ref.
Yes 118 102 86.44 16 13.56 2.89 1.39, 5.97 2.97 1.42, 6.20
Stuttering in the last year No 365 343 93.97 22 6.03 8.08 0.004 Ref.
Yes 61 51 83.61 10 16.39 3.06 1.37, 6.82 3.21 1.43, 7.23
Having cold in the past 2 years Non frequent 379 353 93.14 25 6.59 1.82 0.177 Ref.
Frequent 49 43 87.75 6 12.24 0.53 0.21, 136 0.52 0.20, 1.34
Having cough in the past 2 years Non frequent 386 358 92.75 28 7.25 0.28 0.595 Ref.
Frequent 42 38 90.47 4 9.52 0.74 0.25, 2.23 0.73 0.24, 2.19
Previous intubation No 413 384 92.98 29 7.02 0.093* Ref.
Yes 15 12 80.00 3 20.00 3.31 0.88 3.29 0.87,12.37
Allergy No 308 281 91.23 27 8.76 2.64 0.104 Ref.
Yes 120 115 95.83 5 4.16 0.45 0.17, 1.20 0.46 0.17 1.22
Hearing impairment No 397 368 92.70 29 7.30 0.23 0.629 Ref.
Yes 31 28 90.32 3 9.68 1.36 0.39, 4.74 1.38 0.39,4.85
Asthma No 386 356 92.23 30 7.73 0.757* Ref.
Yes 42 40 95.24 2 4.76 0.59 0.14, 2.58 0.63 0.15, 2.76
Parents are smokers or previous smokers No 240 226 94.16 14 5.83 2.13 0.144 Ref.
Yes 188 170 90.43 18 9.57 1.71 0.83, 3.53 1.79 0.86, 3.71
RSI score >13 No 373 353 94.60 20 5.40 18.76 <0.001 Ref.
Yes 55 43 78.20 12 21.80 4.93 2.25, 10.77 4.78 2.17, 10.51