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. Author manuscript; available in PMC: 2011 May 1.
Published in final edited form as: Harmful Algae. 2010 May 1;9(4):419–425. doi: 10.1016/j.hal.2010.02.005

Table 4.

Lifeguard Survey: Attentiveness and Productivity

Attentiveness- (Scale 1–10) (Paired t-test) Mean SE Range t p
When attendance is average 8.56 0.26 7–10 -- --
When attendance is up* 9.63 0.18 8–10 4.3 0.001
When attendance is down* 6.81 0.52 3–10 −4.2 0.001
When lifeguard has headache or upper respiratory cold* 6.93 0.46 4–10 −4.6 0.001
When there is inclement weather* 7.57 0.70 2–10 −1.5 0.150
When there is red tide* 5.79 0.45 2–8 −5.1 0.000
Productivity (Scale 1–10) (Paired t-test) Mean SE Range t p
When there is inclement weather 5.77 0.24 4–8 -- --
When lifeguard has headache or upper respiratory cold** 3.70 0.34 1–5.5 −4.4 0.001
When there is red tide** 3.81 0.36 1–5.5 −3.6 0.003
*

compared to attentiveness when beach attendance is average

**

compared to productivity when weather is inclement