. 2018 Sep-Oct;20(96):190–198. doi: 10.4103/nah.NAH_3_18

Table 1.

Descriptive statistics and comparison of performance parameters in the three conditions of noise

Test	Performance parameters	Noise condition	Mean	SD	95% Confidence interval		P value	Effect size	Pairwise comparisons

					Lower bound	Upper bound
Serial recall	Number of errors	C1	5.53	0.82	3.75	7.30	0.000	0.53	C1 < C2^*	C1 < C3^*
		C2	7.66	0.91	5.70	9.62			C2 > C1^*	C2 < C3^*
		C3	10.46	0.83	8.66	12.26			C3 > C1^*	C3 > C2^*
Stroop interference	Number of incorrect reactions in naming the color	C1	0.33	0.48	0.06	0.60	0.000	0.67	C1 < C2	C1 < C3^*
		C2	0.67	0.72	0.27	1.07			C2 > C1	C2 < C3^*
		C3	1.47	0.99	0.92	2.02			C3 > C1^*	C3 > C2^*
	Reaction time	C1	28.20	1.13	25.75	30.64	0.000	0.37	C1 < C2^*	C1 < C3^*
		C2	31.06	1.31	28.23	33.89			C2 > C1^*	C2 < C3^*
		C3	32.80	1.31	29.99	35.61			C3 > C1^*	C3 > C2
Response inhibition	The sum of omission errors	C1	0.27	0.45	0.01	0.52	0.000	0.75	C1 < C2^*	C1 < C3^*
		C2	1.13	0.83	0.67	1.60			C2 > C1^*	C2 < C3^*
		C3	2.20	1.74	1.24	3.16			C3 > C1^*	C3 > C2^*
	The sum of commission errors	C1	0.33	0.15	0.00	0.67	0.000	0.62	C1 < C2^*	C1 < C3^*
		C2	1.40	0.19	0.99	1.80			C2 > C1^*	C2 < C3^*
		C3	2.93	0.34	2.19	3.67			C3 > C1^*	C3 > C2^*
	Reaction time	C1	1.00	0.02	0.95	1.06	0.000	0.63	C1 < C2	C1 < C3^*
		C2	1.07	0.03	1.00	1.14			C2 > C1	C2 < C3^*
		C3	1.24	0.03	1.16	1.31			C3 > C1^*	C3 > C2^*

C1 = standard condition, C2 = environmental noise without alarm sounds, C3 = environmental noise with alarm sounds. ^* P < 0.05.