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Table 6 Longitudinal explanatory GRM (Model 3): Regression coefficients with 95% credible intervals

From: Longitudinal measurement invariance and explanatory IRT models for adolescents’ oral health-related quality of life

Factors Comparison of regression coefficients Baseline Follow-up
CPQ11‑14 RSF:8 CPQ11‑14 ISF:8 CPQ11‑14 RSF:8 CPQ11‑14 ISF:8
Gender Boys vs. Girls ‑0.16 (‑0.40,0.07) ‑0.06 (‑0.33,0.20) ‑0.28 (‑0.57,0.03) ‑0.26 (‑0.57,0.05)
Both parents employed Yes vs. No ‑0.23 (‑0.47,0.00) ‑0.36 (‑0.63,‑0.11) 0.12 (‑0.23,0.44) 0.23 (‑0.07,0.52)
Monthly family income >$40,000 vs. <$10,000 0.08 (‑0.37,0.51) 0.17 (‑0.30,0.65) ‑0.01 (‑0.59,0.55) 0.08 (‑0.49,0.68)
$30,000‑$40,000 vs. <$10,000 0.33 (‑0.11,0.77) 0.25 (‑0.23,0.73) ‑0.04 (‑0.54,0.46) 0.32 (‑0.17,0.83)
$20,000‑$30,000 vs. <$10,000 0.19 (‑0.14,0.57) 0.22 (‑0.15,0.61) 0.17 (‑0.28,0.64) 0.21 (‑0.24,0.67)
$10,000‑$20,000 vs. <$10,000 0.13 (‑0.15,0.42) 0.21 (‑0.12,0.53) ‑0.02 (‑0.57,0.52) 0.24 (‑0.30,0.78)
>$40,000 vs. $30,000‑$40,000 ‑0.25 (‑0.70,0.18) ‑0.08 (‑0.57,0.40) 0.19 (‑0.32,0.69) 0.13 (‑0.34,0.60)
>$40,000 vs. $20,000‑$30,000 ‑0.12 (‑0.53,0.30) ‑0.05 (‑0.52,0.38) 0.22 (‑0.19,0.61) ‑0.11 (‑0.50,0.27)
>$40,000 vs. $10,000‑$20,000 ‑0.06 (‑0.47,0.34) ‑0.05 (‑0.47,0.39) ‑0.29 (‑0.86,0.27) ‑0.03 (‑0.61,0.59)
$30,000‑$40,000 vs. $20,000‑$30,000 0.14 (‑0.28,0.55) 0.03 (‑0.44,0.48) ‑0.28 (‑0.83,0.27) ‑0.11 (‑0.69,0.46)
$30,000‑$40,000 vs. $10,000‑$20,000 0.20 (‑0.19,0.58) 0.04 (‑0.40,0.46) ‑0.26 (‑0.74,0.26) ‑0.35 (‑0.86,0.18)
$20,000‑$30,000 vs. $10,000‑$20,000 0.06 (‑0.25,0.38) 0.01 (‑0.32,0.37) ‑0.48 (‑0.92,‑0.01) ‑0.24 (‑0.67,0.21)
Father’s education College graduate or above vs. Below secondary school ‑0.43 (‑0.95,0.07) ‑0.29 (‑0.90,0.30) 0.13 (‑0.60,0.77) 0.23 (‑0.50,0.99)
Senior secondary school (S4‑7) vs. Below secondary school ‑0.73 (‑1.12,‑0.38) ‑0.67 (‑1.15,‑0.25) ‑0.13 (‑0.67,0.30) ‑0.21 (‑0.70,0.35)
Junior Secondary school (S1‑3) vs. Below secondary school ‑0.71 (‑1.09,‑0.36) ‑0.69 (‑1.11,‑0.27) 0.00 (‑0.50,0.45) ‑0.13 (‑0.61,0.37)
College graduate or above vs. Senior secondary school (S4‑7) 0.30 (‑0.11,0.69) 0.38 (‑0.07,0.83) 0.25 (‑0.26,0.79) 0.42 (‑0.10,0.98)
College graduate or above vs. Junior secondary school (S1‑3) 0.28 (‑0.20,0.76) 0.40 (‑0.12,0.92) 0.11 (‑0.52,0.78) 0.36 (‑0.30,1.01)
Senior secondary school (S4‑7) vs. Junior secondary school (S1‑3) ‑0.02 (‑0.33,0.29) 0.02 (‑0.31,0.35) ‑0.13 (‑0.57,0.27) ‑0.08 (‑0.47,0.34)
Mother’s education College graduate or above vs. Below secondary school 0.30 (‑0.19,0.80) 0.31 (‑0.26,0.83) ‑0.26 (‑0.89,0.37) ‑0.30 (‑0.95,0.27)
Senior secondary school (S4‑7) vs. Below secondary school 0.24 (‑0.14,0.61) 0.41 (‑0.01,0.83) ‑0.29 (‑0.74,0.20) ‑0.11 (‑0.60,0.38)
Junior Secondary school (S1‑3) vs. Below secondary school 0.43 (0.03,0.83) 0.48 (0.02,0.91) ‑0.20 (‑0.69,0.30) ‑0.06 (‑0.57,0.43)
College graduate or above vs. Senior secondary school (S4‑7) 0.06 (‑0.30,0.44) ‑0.11 (‑0.54,0.29) 0.02 (‑0.43,0.53) ‑0.20 (‑0.67,0.26)
College graduate or above vs. Junior secondary school (S1‑3) ‑0.13 (‑0.55,0.29) ‑0.18 (‑0.62,0.26) ‑0.06 (‑0.61,0.50) ‑0.25 (‑0.78,0.27)
Senior secondary school (S4‑7) vs. Junior secondary school (S1‑3) ‑0.19 (‑0.49,0.10) ‑0.07 (‑0.38,0.26) ‑0.09 (‑0.48,0.28) ‑0.05 (‑0.44,0.35)
Brushing frequency Twice or more daily vs. Less than twice daily ‑0.29 (‑0.54,‑0.05) ‑0.44 (‑0.71,‑0.16) ‑0.13 (‑0.44,0.20) ‑0.19 (‑0.49,0.14)
Snacking frequency between meals 3 times or more vs. None 0.64 (0.23,1.07) 0.64 (0.17,1.11) ‑0.29 (‑0.85,0.25) ‑0.24 (‑0.76,0.32)
Twice vs. None 0.33 (0.01,0.65) 0.21 (‑0.16,0.57) 0.21 (‑0.21,0.65) 0.21 (‑0.20,0.65)
Once vs. None ‑0.01 (‑0.27,0.25) ‑0.03 (‑0.34,0.26) 0.09 (‑0.29,0.41) 0.16 (‑0.20,0.54)
3 times or more vs. Twice 0.32 (‑0.13,0.74) 0.43 (‑0.05,0.92) ‑0.51 (‑1.08,0.04) ‑0.45 (‑1.00,0.09)
3 times or more vs. Once 0.66 (0.26,1.05) 0.67 (0.24,1.11) ‑0.38 (‑0.89,0.13) ‑0.39 (‑0.88,0.10)
Twice vs. Once 0.34 (0.07,0.62) 0.24 (‑0.06,0.54) 0.13 (‑0.22,0.51) 0.06 (‑0.29,0.40)
CPI Calculus deposits vs. Healthy gum /No bleeding or calculus 0.21 (‑0.06,0.47) 0.26 (‑0.11,0.59) 0.08 (‑0.39,0.48) 0.17 (‑0.27,0.62)
Bleeding on probing vs. Healthy gum /No bleeding or calculus 0.33 (0.02,0.66) 0.34 (‑0.07,0.72) ‑0.29 (‑0.88,0.27) 0.03 (‑0.51,0.59)
Calculus deposits vs. Bleeding on probing ‑0.12 (‑0.39,0.15) ‑0.08 (‑0.36,0.21) 0.37 (‑0.06,0.79) 0.14 (‑0.29,0.56)
DMFT   ‑0.04 (‑0.16,0.07) ‑0.11 (‑0.25,0.02) 0.00 (‑0.06,0.06) 0.00 (‑0.06,0.05)
  1. Data in boldface: 95% credible interval excluded 0, considered as statistically significant at 0.05 level of significance