MULTILEVEL-ANALYSE
Hulpsheet voor de verwerking van toetsen
Dimitri Mortelmans
3.0
OVERZICHT VAN STAPPEN EN MODELLEN
FASE 1: Voorbereiding
1. Data voorbereiden (centreren en standaardiseren)
FASE 2: Variantie component modellen
2. Null random intercept model
3.Random intercept met Level-1 predictoren
4.Toevoegen van Level-2 predictoren aan stap 3
FASE 3: Random slopes testen
5.Testen van random slopes level 1
6.Testen significante random slopes Level 1
7.Testen random slopes met level-2 predictoren
8.Reduceren van parameters in var-covar
FASE 4: Verfijnen en afwerken
9.Testen cross-level interacties
10.Wijzigen schattingsmethode en vergelijken modellen
11.Standaardiseren
, FASE 2: Variantie-component modellen
Legende
Grijze tekst vervang je door de namen in jouw model
Groene kaders vul je in met de gevraagde output
Alles in de witte kaders wordt door Excel berekend
STAP 2 STAP 3 STAP 4
Null Random Intercept Random intercept met level 1 Random intercept met level 1+2
1.00
Coëfficiënt Prob. T Coëfficiënt Prob. T Coëfficiënt Prob. T
FIXED GEDEELTE
Variantie van random 0.060 0.001 0.037 0.001 0.035 0.001
intercept (µ0)
(Kijk in output naar COV PARM EST - Intercept)
Residu op level 1 (r0) 0.780 0.000 0.638 0.000 0.638 0.000
(Kijk in output naar COV PARM EST - Residual)
INTRA-CLASS CORRELATIE-COËFFICIËNT
RHO 0.072
7,2% variantie op level 2
92,8% variantie op level 1
R²
1. Zonder enige correctie
R³-waarden ten opzichte van STAP 2 Level 1-R² 0.18 Level 1-R² 0.18
(niet gebruiken in rapporten en publicaties !!) Level 2-R² 0.38 Level 2-R² 0.41
2. Met correctie (Snijders&Bosker, 1994)
Gemiddelde groepsgrootte 1892.04
van level 2 (vraag op met MEANS)
Gecorrigeerde R²-waarden ten opzichte van STAP 2 Level 1-R² 0.20 Level 1-R² 0.20
Level 2-R² 0.38 Level 2-R² 0.41
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