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. Author manuscript; available in PMC: 2019 Nov 1.
Published in final edited form as: Sleep Med. 2018 Jun 2;51:153–166. doi: 10.1016/j.sleep.2018.05.018

Table 5.

Actigraphy Outcomes – Last Observation Carried Forward Analyses

Measures Baseline Post-treatment 3-mo Follow-up Group × Timea,b
M SD M SD M SD F η2p p
Sleep Onset Latency (mins.) 1.97 .03 .15
 BBTi 19.19 18.36 13.94 12.33 20.37 21.78
 SMC 22.13 18.51 24.00 20.07 23.60 20.20
Wake After Sleep Onset (mins.) 2.57 .04 .09
 BBTi 42.60 18.65 32.05 17.06 33.83 17.48
 SMC 41.85 14.87 41.00 15.10 40.40 15.10
Total Sleep Time (mins.) .89 .02 .41
 BBTi 395.63 43.46 371.79 47.69 379.71 49.41
 SMC 385.52 66.65 375.75 63.46 375.33 55.37
Sleep Efficiency (%) 3.05 .05 .07
 BBTi 84.65 7.36 86.39 7.36 85.53 7.79
 SMC 83.42 6.82 82.58 7.05 82.17 7.27

Note. BBTi refers to Brief Behavioral Treatment of insomnia group (n = 32); SMC refers to Self-monitoring control group (n = 30).

a

Greenhouse-Geisser correction was applied to Group × Time interaction.

b

Guidelines for interpreting η2p: .01 = small, .06 = moderate, .14 = large (Cohen, 1977)