Table 3.

Correlation between different self-reported sedentary time questions ^a and accelerometer-assessed standardized stationary time.

Varieties	Stationary (min/day)	Prolonged Stationary b (min/day)	SED-GIH	Katzmarzyk	IPAQ (min)	Marshall (min)
SED-GIH	0.48 c	0.44 c	-	0.89 e	0.83 e	0.72 d
Katzmarzyk	0.53 d	0.46 c	0.89 e	-	0.72 d	0.72 d
IPAQ (min)	0.44 c	0.41 c	0.83 e	0.72 d	-	0.70 d
Marshall (min)	0.48 c	0.46 c	0.72 d	0.72 d	0.70 d	-

All results in Spearman’s rho, except for SED-GIH vs. Katzmarzyk where gamma correlation was used. All p < 0.001. ^a SED-GIH and the question used by Katzmarzyk [3] are categorical, with seven and five answer alternatives, respectively. IPAQ is an open-ended question [17]. Marshall is the sum of the domain-specific sitting question on weekdays [18,19]. ^b Prolonged stationary: time in prolonged stationary time (≥20 min). The associations were interpreted as ^c moderate (Spearman’s rho 0.3–0.5), ^d strong (Spearman’s rho 0.5–0.8), or ^e very strong (Spearman’s rho 0.8–1.0).