Table 3.

Factors influencing agreement between self-report at first- and second-stage surveys

	Mobility		Looking after myself		Doing usual activities		Having pain or discomfort		Feeling worried, sad, or unhappy
	Estimate	P value	Estimate	P value	Estimate	P value	Estimate	P value	Estimate	P value
City
Tokyo	0.131	0.334	− 0.106	0.701	0.081	0.658	− 0.036	0.762	− 0.094	0.419
Osaka	− 0.123	0.349	0.167	0.564	− 0.135	0.435	− 0.005	0.963	0.194	0.099
Fukuoka	Reference
Gender
Female	− 0.045	0.628	− 0.314	0.122	0.077	0.540	− 0.096	0.255	0.099	0.224
Male	Reference
Household income
< JPY 5 millions	0.113	0.538	− 0.083	0.818	− 0.291	0.226	0.026	0.878	0.001	0.993
5 millions to < 10 millions	0.019	0.903	0.196	0.543	0.148	0.502	− 0.154	0.300	− 0.311	0.034*
≥ 10 millions	Reference
School
Elementary school	− 0.179	0.069	− 0.559	0.026*	− 0.176	0.187	− 0.210	0.017*	0.055	0.507
Junior high school	Reference
Number of parents
1	− 0.019	0.909	0.010	0.975	0.312	0.211	0.021	0.887	− 0.186	0.182
2	Reference

*P < 0.05