Table 3 Ordinal logistic regression analysis of income groups, social networks of relatives, social networks of friends and self-rated oral health trajectory groups

Income groups

 High income-stable

1

1

1

1

 Increase income

2.58 (1.37–4.89)**

2.38 (1.25–4.51)**

2.24 (1.17–4.31)*

2.65 (1.17–4.38)*

 Decrease income

1.98 (1.42–2.77)**

1.89 (1.35–2.65)**

1.80 (1.27–2.56)**

1.78 (1.25–2.54)**

 Low income-stable

3.43 (2.45–4.81)**

3.01 (2.13–4.24)**

2.44 (1.69–3.85)**

2.44 (1.68–3.55)**

Number of family members/friends in the social networks

 Large social networks stable

1

1

1

1

 Increased social networks

1.71 (1.21–2.41)**

1.48 (1.04–2.11)*

1.43 (0.99–2.06)

1.29 (0.89–1.89)

 Decreased social networks

1.92 (1.34–2.75) **

1.71 (0.58–1.38)**

1.61 (1.10–2.36)*

1.58 (1.07–2.34)*

 Small social networks stable

2.47 (1.75–3.45)**

2.12 (1.49–3.00)**

1.95 (1.36–2.80)**

1.98 (1.38–2.85)**