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Table 1 Demographic characteristics and OHIP summary score of study participants

From: Is assessment of oral health-related quality of life burdensome? An item nonresponse analysis of the oral health impact profile

Demographic variable

Studies without supervision (N = 1,366)

Studies with supervision (N = 3,481)

N(%) or Mean (SD)

  

Country

 Germany

 

2,155 (61.9)

 Hungary

 

659 (18.9)

 Japan

 

459 (13.2)

 Sweden

1,366 (100)

119 (3.4)

 Slovenia

 

89 (2.6)

Gender*

 Males

611 (44.7)

1,588 (45.6)

 Females

744 (54.5)

1,888 (54.2)

Population type

  

 General population

1,366 (100)

2,118 (60.8)

 Prosthodontic patients

 

1,363 (39.2)

Age

49.9 (17.11)

49.9 (17.11)

Summary scores for 46 OHIP item

 General population

 

15.5 (20.7)

 Prosthodontic patients

 

36.6 (29.3)

 Total summary scores

19.0 (24.5)

23.8 (26.5)

  1. *16 Participants had missing information on gender