Table 4

Call-light related characteristics: The results as the variables reported by means

All (n = 808)

Hosp. 1 (n = 459)

Hosp. 2 (n = 119)

Hosp. 3 (n = 47)

Hosp. 4 (n = 183)


Variable/Mean (Standard deviation)

Mean (SD)

Mean (SD)

Mean (SD)

Mean (SD)

Mean (SD)

One-way ANOVA tests (P)


No. of calls per hour a staff responds to

6.46 (6.99)

6.83 (8.23)

6.32 (5.04)

4.80 (3.31)

6.05 (4.98)

F = 1.47, (P = .22)

Average length of time to answer a call light during day shift, min

3.57 (2.56)

3.63 (2.51)

3.47 (2.13)

2.42 (1.55)

3.78 (3.04)

F = 2.34, (P = .07)

Average length of time to answer a call light during evening shift, min

3.70 (2.72)

3.68 (2.80)

3.73 (2.67)

2.62 (1.79)

4.05 (2.63)

F = 1.50, (P = .21)

Average length of time to answer a call light during night shift, min

3.42 (3.38)

3.49 (3.36)

2.78 (2.08)

1.99 (1.48)

3.38 (4.06)

F = 2.09, (P = .10)


Tzeng BMC Health Services Research 2010 10:52   doi:10.1186/1472-6963-10-52

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