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Behavior observation of major noise sources in critical care wards

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Figure

Table 1 3AM, with the notes and four types of descriptors.A fragment of the original check sheet for one observation at the multiple-bed ward commenced from 2AM to
Table 2 Arithmetic means, standard deviations (in brackets) and medians (in italic) of frequency (per hour), interval (s) and duration (s) for five typical noise sources observed over 6 nights in the single-bed and multiple-bed ICU wards
Table 3 The estimated parameters (�, � and the corresponding standard errors in brackets) of lognormal distribution for the interval (s) and duration (s) for five typical noise sources observed over 6 nights in the single-bed and multiple-bed wards
Table 4 The number of occurrences of multiple noises observed over 6 nights in the single-bed and multiple-bed wards, with the relevant perceived loudness level in brackets

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