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Table 2 Logistic regression parameter estimates used to predict sedentary time for individual nonwear epochs

From: Imputing accelerometer nonwear time in children influences estimates of sedentary time and its associations with cardiometabolic risk

  Imputed dataset I Imputed dataset II
Parameter estimate (SE) p-value Parameter estimate (SE) p-value
Intercept 0.4107 (0.0169) <.0001 0.3787 (0.0178) <.0001
Age, y 0.0580 (0.0013) <.0001 0.0568 (0.0013) <.0001
Sex
 Male 0 (referent) 0 (referent)
 Female −0.0540 (0.0075) <.0001 −0.0442 (0.0074) <.0001
Race
 White 0 (referent) 0 (referent)
 Other 0.0146 (0.0013) <.0001 0.0146 (0.0013) <.0001
Family structure
 Dual parent 0 (referent) 0 (referent)
 Single parent −0.1253 (0.0035) <.0001 −0.1258 (0.0034) <.0001
 No response 0.1843 (0.0062) <.0001 0.2024 (0.0062) <.0001
Family income
 ≤ $50,000 0 (referent) 0 (referent)
 $50,001 – $100,000 0.0390 (0.0013) <.0001 0.0424 (0.0013) <.0001
 ≥ $100,000 −0.0531 (0.0013) <.0001 −0.0427 (0.0013) <.0001
 No response −0.0616 (0.0019) <.0001 −0.0644 (0.0017) <.0001
Parental education
 High school or less 0 (referent) 0 (referent)
 2-y college 0.0077 (0.0013) <.0001 0.0055 (0.0014) <.0001
 4-y college/university or higher −0.0352 (0.0012) <.0001 −0.0292 (0.0013) <.0001
Chronic medical condition
 Yes 0 (referent) 0 (referent)
 No −0.0027 (0.0019) .1568 −0.0069 (0.0020) .0006
Fast food consumption
 Rarely or never 0 (referent) 0 (referent)
 1 time/month −0.0303 (0.0012) <.0001 −0.0302 (0.0012) <.0001
 ≥ 2 times/month 0.0280 (0.0010) <.0001 0.0219 (0.0010) <.0001
 Snacking frequency, times per week −0.0035 (0.0002) <.0001 −0.0071 (0.0002) <.0001
 Maturity (per unit of maturity offset) 0.0180 (0.0014) <.0001 0.0151 (0.0014) <.0001
 Cardiometabolic risk Z-score 0.0643 (0.0011) <.0001 0.0607 (0.0012) <.0001
 Internalizing symptoms Z-score 0.0355 (0.0008) <.0001 0.0297 (0.0007) <.0001
Season
 Spring 0 (referent) 0 (referent)
 Summer 0.0138 (0.0018) <.0001 0.0122 (0.0020) <.0001
 Fall 0.0196 (0.0012) <.0001 0.0226 (0.0014) <.0001
 Winter 0.0552 (0.0012) <.0001 0.0612 (0.0012) <.0001
Type of day
 School day 0 (referent) 0 (referent)
 Weekend or holiday 0.2005 (0.0022) <.0001 0.1968 (0.0025) <.0001
 Camp day −0.1504 (0.0042) <.0001 −0.1433 (0.0051) <.0001
Time of day
 00:00–09:29 0 (referent) 0 (referent)
 09:30–14:59 −0.1329 (0.0032) <.0001 −0.1339 (0.0033) <.0001
 15:00–17:59 −0.1668 (0.0037) <.0001 −0.1664 (0.0038) <.0001
 18:00–23:59 0.1883 (0.0040) <.0001 0.1900 (0.0040) <.0001
Type of day x time of day interaction
 School day, all hours 0 (referent) 0 (referent)
 Weekend, 00:00–09:29 0 (referent) 0 (referent)
 Weekend, 09:30–14:59 −0.0644 (0.0033) <.0001 −0.0617 (0.0035) <.0001
 Weekend, 15:00–17:59 −0.0393 (0.0039) <.0001 −0.0394 (0.0039) <.0001
 Weekend, 18:00–23:59 −0.1034 (0.0039) <.0001 −0.1058 (0.0042) <.0001
 Camp day, 00:00–09:29 0 (referent) 0 (referent)
 Camp day, 09:30–14:59 −0.0555 (0.0062) <.0001 −0.0593 (0.0066) <.0001
 Camp day, 15:00–17:59 0.0082 (0.0073) .2589 0.0084 (0.0073) .2505
 Camp day, 18:00–23:59 0.0766 (0.0077) <.0001 0.0816 (0.0079) <.0001
Age x sex interaction
 Older males 0 (referent) 0 (referent)
 Older females 0.0083 (0.0007) <.0001 0.0081 (0.0006) <.0001
 Screen time (average hours/day) N/A 0.0105 (0.0002) <.0001
 # of media devices in the home N/A 0.0018 (0.0003) <.0001
Homework time
 No homework N/A 0 (referent)
 <  1 h/day N/A −0.0229 (0.0010) <.0001
 ≥1 h/day N/A 0.0011 (0.0012) .3596
Presence of household media rules
 No N/A 0 (referent)
 Yes N/A 0.0073 (0.0009) <.0001